Replace checkboxes with Compound checkboxes, and appropriately label each checkbox. (#29363)

* Fix labelling of avatar menu

* Make the integration manager toggle more clear.

* fix label

* lint

* Update snapshots.

* Refactor many cases of checkbox to use the new compound component.

* Remove non-checkbox related changes

* Reset some things

* Remove usages of mx_checkbox* styling.

* Use label locators for apperance tests.

* small linter tweaks

* lint

* update screenshot

* Test updates

* lint

* Realign checkboxes for device selection.

* Fixup QuickSettings styling

* remove comment

* lint

* flex comment

* remove unused label

* remove redundant classes

* add test for spaces

* lint

* Copyright

* fixup spaces test

* spaces lint

* Replace pin with compound pin.

* Realign icons

* Remove hack for colouring icons

* Adjust existing rooms component to correctly label room.

* Add test for adding an existing room to an existing space.

* Set deterministic sort order for rooms

* lint

res/css/views/dialogs/_AddExistingToSpaceDialog.pcss

@@ -1,5 +1,5 @@
 /*
-Copyright 2024 New Vector Ltd.
+Copyright 2024,2025 New Vector Ltd.
 Copyright 2021 The Matrix.org Foundation C.I.C.
 
 SPDX-License-Identifier: AGPL-3.0-only OR GPL-3.0-only OR LicenseRef-Element-Commercial
@@ -32,6 +32,11 @@ Please see LICENSE files in the repository root for full details.
     .mx_AddExistingToSpace_section {
         margin-right: 12px;
 
+        ul {
+            list-style: none;
+            padding-left: 0;
+        }
+
         // provides space for scrollbar so that checkbox and scrollbar do not collide
 
         &:not(:first-child) {
@@ -214,6 +219,12 @@ Please see LICENSE files in the repository root for full details.
     display: flex;
     margin-top: 12px;
 
+    form {
+        /* Align checkboxes. */
+        margin-top: auto;
+        margin-bottom: auto;
+    }
+
     .mx_DecoratedRoomAvatar, /* we can't target .mx_BaseAvatar here as it'll break the decorated avatar styling */ {
         margin-right: 12px;
     }
@@ -227,8 +238,4 @@ Please see LICENSE files in the repository root for full details.
         text-overflow: ellipsis;
         margin-right: 12px;
     }
-
-    .mx_Checkbox {
-        align-items: center;
-    }
 }