Separate out SDKContext (#34053)

* Separate out SDKContext

...from SDKContextClass, as the comments hopefully explain.

Also make the captitalisation consistent.

* Adding the new file usually helps too

* Fix import

* More comment

* Update the various imports of SDKContextClass

* Also fix case of TestSDKContext

* Update the mock

apps/web/test/unit-tests/hooks/useRoomCall-test.tsx

@@ -22,7 +22,7 @@ import { ScopedRoomContextProvider } from "../../../src/contexts/ScopedRoomConte
 import RoomContext, { type RoomContextType } from "../../../src/contexts/RoomContext";
 import { MatrixClientContextProvider } from "../../../src/components/structures/MatrixClientContextProvider";
 import type LegacyCallHandler from "../../../src/LegacyCallHandler";
-import { SdkContextClass } from "../../../src/contexts/SDKContext";
+import { SDKContextClass } from "../../../src/contexts/SDKContextClass";
 import SettingsStore from "../../../src/settings/SettingsStore";
 import { CallStore } from "../../../src/stores/CallStore";
 
@@ -59,7 +59,7 @@ describe("useRoomCall", () => {
             on: jest.fn(),
             off: jest.fn(),
         };
-        jest.spyOn(SdkContextClass.instance, "legacyCallHandler", "get").mockReturnValue(
+        jest.spyOn(SDKContextClass.instance, "legacyCallHandler", "get").mockReturnValue(
             callHandler as unknown as LegacyCallHandler,
         );
         const origGetValue = SettingsStore.getValue;