Create more common_* common strings (#11439)

src/components/structures/RoomSearchView.tsx

@@ -256,7 +256,7 @@ export const RoomSearchView = forwardRef<ScrollPanel, Props>(
                     ret.push(
                         <li key={mxEv.getId() + "-room"}>
                             <h2>
-                                {_t("Room")}: {room.name}
+                                {_t("common|room")}: {room.name}
                             </h2>
                         </li>,
                     );

src/components/structures/ThreadPanel.tsx

@@ -112,7 +112,7 @@ export const ThreadPanelHeader: React.FC<{
     return (
         <div className="mx_BaseCard_header_title">
             <Heading size="4" className="mx_BaseCard_header_title_heading">
-                {_t("Threads")}
+                {_t("common|threads")}
             </Heading>
             {!empty && (
                 <>

src/components/structures/ThreadView.tsx

@@ -369,7 +369,7 @@ export default class ThreadView extends React.Component<IProps, IState> {
         return (
             <div className="mx_BaseCard_header_title">
                 <Heading size="4" className="mx_BaseCard_header_title_heading">
-                    {_t("Thread")}
+                    {_t("common|thread")}
                 </Heading>
                 <ThreadListContextMenu mxEvent={this.props.mxEvent} permalinkCreator={this.props.permalinkCreator} />
             </div>

src/components/structures/UserMenu.tsx

@@ -327,7 +327,7 @@ export default class UserMenu extends React.Component<IProps, IState> {
             homeButton = (
                 <IconizedContextMenuOption
                     iconClassName="mx_UserMenu_iconHome"
-                    label={_t("Home")}
+                    label={_t("common|home")}
                     onClick={this.onHomeClick}
                 />
             );