MM-52261: Remove boards language selector, use Language in Display Settings (#23095)

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

webapp/channels/src/components/post_view/channel_intro_message/pluggable_intro_buttons/pluggable_intro_buttons.tsx

@@ -25,7 +25,6 @@ const PluggableIntroButtons = React.memo((props: Props) => {
                 key={buttonProps.id}
                 className={'intro-links color--link channelIntroButton style--none'}
                 onClick={() => buttonProps.action?.(props.channel, props.channelMember)}
-                aria-label={buttonProps.text}
             >
                 {buttonProps.icon}
                 {buttonProps.text}

webapp/channels/src/plugins/registry.ts

@@ -208,7 +208,7 @@ export default class PluginRegistry {
     // Accepts the following:
     // - icon - React element to use as the button's icon
     // - action - a function called when the button is clicked, passed the channel and channel member as arguments
-    // - text - a localized string to use as the button's text
+    // - text - a localized string or React element  to use as the button's text
     registerChannelIntroButtonAction = reArg([
         'icon',
         'action',
@@ -220,8 +220,7 @@ export default class PluginRegistry {
     }: {
         icon: ReactResolvable;
         action: PluginComponent['action'];
-        tooltipText: string;
-        text: string;
+        text: ReactResolvable;
     }) => {
         const id = generateId();