Fix config override of other settings levels (#12593)

* Make config override other settings levels and add tests

* fix documentation

* lint

* Use a const for finalLevel.

* respect the explicit parameter

* Use supportedLevelsAreOrdered for config overrides rather than a separate setting.

* Fix typos

* Fix mock in UserSetttingsDialog-test

* Special case disabling of setting tos use config overrides.

* remove logs

test/components/views/dialogs/UserSettingsDialog-test.tsx

@@ -54,6 +54,7 @@ jest.mock("../../../../src/settings/SettingsStore", () => ({
     getDescription: jest.fn(),
     shouldHaveWarning: jest.fn(),
     disabledMessage: jest.fn(),
+    settingIsOveriddenAtConfigLevel: jest.fn(),
 }));
 
 jest.mock("../../../../src/SdkConfig", () => ({