Create mock implementation of navigator.registerProtocolHandler for jest

Maybe this will fix the tests for matrix-org/matrix-react-sdk#7700

Signed-off-by: Aaron Raimist <[email protected]>

Author: aaronraimist

test/jest-mocks.js

@@ -13,5 +13,9 @@ Object.defineProperty(window, 'matchMedia', {
     })),
 });
 
+Object.defineProperty(navigator, 'registerProtocolHandler', {
+    value: jest.fn().mockImplementation(),
+});
+
 // maplibre requires a createObjectURL mock
 global.URL.createObjectURL = jest.fn();