Add UIFeature to hide public space and room creation (#30708)

* Add settings to hide public room & space creation.

* Add space changes.

* Add room changes.

* lint

* Add playwright tests

* don't specialcase 1 join rule

* Ensure mocks get cleared

* Fixup test

* Add SpaceCreateMenu component unit-tests

* Fixup create room test asserts

* fix import

src/settings/Settings.tsx

@@ -1425,6 +1425,14 @@ export const SETTINGS: Settings = {
         supportedLevels: LEVELS_UI_FEATURE,
         default: true,
     },
+    [UIFeature.AllowCreatingPublicSpaces]: {
+        supportedLevels: LEVELS_UI_FEATURE,
+        default: true,
+    },
+    [UIFeature.AllowCreatingPublicRooms]: {
+        supportedLevels: LEVELS_UI_FEATURE,
+        default: true,
+    },
 
     // Electron-specific settings, they are stored by Electron and set/read over an IPC.
     // We store them over there are they are necessary to know before the renderer process launches.

src/settings/UIFeature.ts

@@ -25,6 +25,8 @@ export const enum UIFeature {
     RoomHistorySettings = "UIFeature.roomHistorySettings",
     TimelineEnableRelativeDates = "UIFeature.timelineEnableRelativeDates",
     BulkUnverifiedSessionsReminder = "UIFeature.BulkUnverifiedSessionsReminder",
+    AllowCreatingPublicRooms = "UIFeature.allowCreatingPublicRooms",
+    AllowCreatingPublicSpaces = "UIFeature.allowCreatingPublicSpaces",
 }
 
 export enum UIComponent {