fix(copy): soundboard room/space wording, deafen Escape hint, pin typo; keep Reddit context= (#279, #280)

#279: Room Settings → Soundboard said clips are "inherited by every room
under this space" for plain rooms too; the wording now follows
room.isSpaceRoom(). The Push to Deafen description only mentions Escape
while rebinding. "can pin a messages" → "can pin a message".

#280: the tracking stripper removed Reddit's context=, which is what
makes a comment permalink show its parent comments. Only share_id and
rdt are stripped now.

Fixes #279
Fixes #280

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017PCb59uY3UKqDqt7B6hzd5

src/app/features/room/room-pin-menu/RoomPinMenu.tsx

@@ -531,7 +531,7 @@ export const RoomPinMenu = forwardRef<HTMLDivElement, RoomPinMenuProps>(
                         No Pinned Messages
                       </Text>
                       <Text size="T400" align="Center">
-                        Users with sufficient power level can pin a messages from its context menu.
+                        Users with sufficient power level can pin a message from its context menu.
                       </Text>
                     </Box>
                   </Box>