Replace forceCount prop with hideIfDot (#12344)

This replaces the `forceCount` prop on room badge components with
`hideIfDot` which hopefully gives a better idea of what it does,
since forceCount did not really force a count. Also remove the
prop where it was just passing the default value anyway.

src/components/views/spaces/SpaceTreeLevel.tsx

@@ -113,7 +113,6 @@ export const SpaceButton = <T extends keyof JSX.IntrinsicElements>({
             <div className="mx_SpacePanel_badgeContainer">
                 <NotificationBadge
                     onClick={jumpToNotification}
-                    forceCount={false}
                     notification={notificationState}
                     aria-label={ariaLabel}
                     tabIndex={tabIndex}