Tooltip: improve accessibility for call and voice messages (#12489)

* Move to `AccessibilityButton`

* Update snapshots

* Add tests

* Update snapshots

test/test-utils/test-utils.ts

@@ -271,6 +271,7 @@ export function createTestClient(): MatrixClient {
         getMediaConfig: jest.fn(),
         baseUrl: "https://matrix-client.matrix.org",
         matrixRTC: createStubMatrixRTC(),
+        isFallbackICEServerAllowed: jest.fn().mockReturnValue(false),
     } as unknown as MatrixClient;
 
     client.reEmitter = new ReEmitter(client);