message: Replace manual mock with jest.mock
diff: @@ -23,9 +23,15 @@ import _FontScalingPanel from '../../../../src/components/views/settings/FontSca
  const FontScalingPanel = TestUtils.wrapInMatrixClientContext(_FontScalingPanel);
  -import * as randomstring from "matrix-js-sdk/src/randomstring";
  -// @ts-expect-error: override random function to make results predictable
  -randomstring.randomString = () => "abdefghi";
  +// Fake random strings to give a predictable snapshot
  +jest.mock(
  + 'matrix-js-sdk/src/randomstring',
  + () => {
  + return {
  + randomString: () => "abdefghi",
  + };
  + },
  +);
  describe('FontScalingPanel', () => {
  it('renders the font scaling UI', () => {
  