UI: Correctly unregister Virtual Camera & Source Toolbar hotkeys

Fixes an issue where the hotkey entries would be duplicated
(including in the UI hotkey list) on every Profile switch.

UI/window-basic-main.cpp

@@ -2452,7 +2452,9 @@ void OBSBasic::ClearHotkeys()
 	obs_hotkey_pair_unregister(recordingHotkeys);
 	obs_hotkey_pair_unregister(pauseHotkeys);
 	obs_hotkey_pair_unregister(replayBufHotkeys);
+	obs_hotkey_pair_unregister(vcamHotkeys);
 	obs_hotkey_pair_unregister(togglePreviewHotkeys);
+	obs_hotkey_pair_unregister(contextBarHotkeys);
 	obs_hotkey_unregister(forceStreamingStopHotkey);
 	obs_hotkey_unregister(togglePreviewProgramHotkey);
 	obs_hotkey_unregister(transitionHotkey);