Input Field: Fix accessibility issues with errors not associated to proper form fields (#30430)

* Cursor first pass

* Iterating

* Updated snapshots

* Alert role only for error or warning

---------

Co-authored-by: Mattermost Build <build@mattermost.com>

webapp/channels/src/components/start_trial_form_modal/__snapshots__/start_trial_form_modal.test.tsx.snap

@@ -76,6 +76,7 @@ Object {
                     class="Input_wrapper"
                   >
                     <input
+                      aria-invalid="false"
                       aria-label="Name"
                       class="Input form-control large"
                       id="input_name"
@@ -102,6 +103,8 @@ Object {
                     class="Input_wrapper"
                   >
                     <input
+                      aria-describedby="error_email"
+                      aria-invalid="true"
                       aria-label="Business Email"
                       class="Input form-control large Input__focus"
                       id="input_email"
@@ -114,8 +117,11 @@ Object {
                 </fieldset>
                 <div
                   class="Input___customMessage Input___error"
+                  id="error_email"
+                  role="alert"
                 >
                   <i
+                    aria-hidden="true"
                     class="icon error icon-alert-circle-outline"
                   />
                   <span>
@@ -136,6 +142,7 @@ Object {
                     class="Input_wrapper"
                   >
                     <input
+                      aria-invalid="false"
                       aria-label="Company Name"
                       class="Input form-control large"
                       id="input_company_name"

webapp/channels/src/components/widgets/inputs/input/__snapshots__/input.test.tsx.snap

@@ -14,6 +14,7 @@ exports[`components/widgets/inputs/Input should match snapshot 1`] = `
       className="Input_wrapper"
     >
       <input
+        aria-invalid={false}
         className="Input form-control medium"
         id="input_"
         onBlur={[Function]}

webapp/channels/src/components/widgets/inputs/input/input.tsx

@@ -80,6 +80,9 @@ const Input = React.forwardRef((
     const [focused, setFocused] = useState(false);
     const [customInputLabel, setCustomInputLabel] = useState<CustomMessageInputType>(null);
 
+    const errorId = `error_${name || ''}`;
+    const inputId = `input_${name || ''}`;
+
     useEffect(() => {
         if (customMessage === undefined || customMessage === null) {
             if (customInputLabel !== null) {
@@ -136,7 +139,8 @@ const Input = React.forwardRef((
     };
 
     const showLegend = Boolean(focused || value);
-    const error = customInputLabel?.type === 'error';
+    const error = customInputLabel?.type === ItemStatus.ERROR;
+    const warning = customInputLabel?.type === ItemStatus.WARNING;
     const limitExceeded = limit && value && !Array.isArray(value) ? value.toString().length - limit : 0;
 
     const clearButton = value && clearable ? (
@@ -161,11 +165,13 @@ const Input = React.forwardRef((
             return (
                 <textarea
                     ref={ref as React.RefObject<HTMLTextAreaElement>}
-                    id={`input_${name || ''}`}
+                    id={inputId}
                     className={classNames('Input form-control', inputSize, inputClassName, {Input__focus: showLegend})}
                     value={value}
                     placeholder={placeholderValue}
                     aria-label={ariaLabel}
+                    aria-describedby={error ? errorId : undefined}
+                    aria-invalid={error || hasError || limitExceeded > 0}
                     rows={3}
                     name={name}
                     disabled={disabled}
@@ -179,11 +185,13 @@ const Input = React.forwardRef((
         return (
             <input
                 ref={ref as React.RefObject<HTMLInputElement>}
-                id={`input_${name || ''}`}
+                id={inputId}
                 className={classNames('Input form-control', inputSize, inputClassName, {Input__focus: showLegend})}
                 value={value}
                 placeholder={placeholderValue}
                 aria-label={ariaLabel}
+                aria-describedby={error ? errorId : undefined}
+                aria-invalid={error || hasError || limitExceeded > 0}
                 name={name}
                 disabled={disabled}
                 {...otherProps}
@@ -223,7 +231,11 @@ const Input = React.forwardRef((
                 {addon}
             </fieldset>
             {customInputLabel && (
-                <div className={`Input___customMessage Input___${customInputLabel.type}`}>
+                <div
+                    id={errorId}
+                    className={`Input___customMessage Input___${customInputLabel.type}`}
+                    role={error || warning ? 'alert' : undefined}
+                >
                     {customInputLabel.type && (
                         <i
                             className={classNames(`icon ${customInputLabel.type}`, {
@@ -232,6 +244,7 @@ const Input = React.forwardRef((
                                 'icon-information-outline': customInputLabel.type === ItemStatus.INFO,
                                 'icon-check': customInputLabel.type === ItemStatus.SUCCESS,
                             })}
+                            aria-hidden='true'
                         />)}
                     <span>{customInputLabel.value}</span>
                 </div>

webapp/channels/src/components/widgets/inputs/password_input/password_input.tsx

@@ -71,7 +71,10 @@ const PasswordInput = React.forwardRef((
                     onClick={toggleShowPassword}
                     disabled={disabled}
                 >
-                    <i className={showPassword && !disabled ? 'icon-eye-off-outline' : 'icon-eye-outline'}/>
+                    <i
+                        className={showPassword && !disabled ? 'icon-eye-off-outline' : 'icon-eye-outline'}
+                        aria-hidden='true'
+                    />
                 </button>
             }
             value={value}