[MA-35]: Update aria-label (#29810)

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

webapp/channels/src/components/channel_info_rhs/top_buttons.tsx

@@ -134,6 +134,7 @@ export default function TopButtons({
                 <Button
                     onClick={actions.toggleFavorite}
                     className={isFavorite ? 'active' : ''}
+                    aria-label={favoriteText}
                 >
                     <div>
                         <i className={'icon ' + favoriteIcon}/>
@@ -152,6 +153,7 @@ export default function TopButtons({
                 <Button
                     onClick={actions.toggleMute}
                     className={isMuted ? 'active' : ''}
+                    aria-label={mutedText}
                 >
                     <div>
                         <i className={'icon ' + mutedIcon}/>
@@ -196,6 +198,7 @@ export default function TopButtons({
                     <CopyButton
                         onClick={copyLink.onClick}
                         className={copyLink.copiedRecently ? 'success' : ''}
+                        aria-label={copyText}
                     >
                         <div>
                             <i className={'icon ' + copyIcon}/>