[MM-61599]: Remove tabIndex from non-interactive elements (#29659)

webapp/channels/src/components/post/post_component.tsx

@@ -526,7 +526,6 @@ function PostComponent(props: Props) {
                 ref={postRef}
                 id={getTestId()}
                 data-testid={postAriaLabelDivTestId}
-                tabIndex={0}
                 post={post}
                 className={getClassName()}
                 onClick={handlePostClick}

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

@@ -300,7 +300,6 @@ exports[`components/post_edit_history should match snapshot 1`] = `
                         class="post-message__text"
                         dir="auto"
                         id="rhsPostMessageText_post_id"
-                        tabindex="0"
                       >
                         <p>
                           post message

webapp/channels/src/components/post_edit_history/edited_post_item/__snapshots__/edited_post_item.test.tsx.snap

@@ -131,7 +131,6 @@ exports[`components/post_edit_history/edited_post_item should match snapshot whe
                   class="post-message__text"
                   dir="auto"
                   id="rhsPostMessageText_post_id"
-                  tabindex="0"
                 >
                   <p>
                     post message

webapp/channels/src/components/post_view/post_message_view/__snapshots__/post_message_view.test.tsx.snap

@@ -10,7 +10,6 @@ exports[`components/post_view/PostAttachment should match snapshot 1`] = `
     dir="auto"
     id="postMessageText_post_id"
     onClick={[Function]}
-    tabIndex={0}
   >
     <Connect(PostMarkdown)
       imageProps={
@@ -47,7 +46,6 @@ exports[`components/post_view/PostAttachment should match snapshot, on Show Less
     dir="auto"
     id="postMessageText_post_id"
     onClick={[Function]}
-    tabIndex={0}
   >
     <Connect(PostMarkdown)
       imageProps={
@@ -84,7 +82,6 @@ exports[`components/post_view/PostAttachment should match snapshot, on Show More
     dir="auto"
     id="postMessageText_post_id"
     onClick={[Function]}
-    tabIndex={0}
   >
     <Connect(PostMarkdown)
       imageProps={
@@ -139,7 +136,6 @@ exports[`components/post_view/PostAttachment should match snapshot, on edited po
     dir="auto"
     id="postMessageText_post_id"
     onClick={[Function]}
-    tabIndex={0}
   >
     <Connect(PostMarkdown)
       imageProps={
@@ -177,7 +173,6 @@ exports[`components/post_view/PostAttachment should match snapshot, on ephemeral
     dir="auto"
     id="postMessageText_post_id"
     onClick={[Function]}
-    tabIndex={0}
   >
     <Connect(PostMarkdown)
       imageProps={

webapp/channels/src/components/post_view/post_message_view/post_message_view.tsx

@@ -150,7 +150,6 @@ export default class PostMessageView extends React.PureComponent<Props, State> {
                 maxHeight={maxHeight}
             >
                 <div
-                    tabIndex={0}
                     id={id}
                     className='post-message__text'
                     dir='auto'

webapp/channels/src/plugins/test/__snapshots__/post_type.test.tsx.snap

@@ -113,7 +113,6 @@ exports[`plugins/PostMessageView should match snapshot with no extended post typ
     dir="auto"
     id="postMessageText_post_id"
     onClick={[Function]}
-    tabIndex={0}
   >
     <Connect(PostMarkdown)
       imageProps={