message: Change order of test cases
  Just moving test cases so that "generic message" ones are grouped at the bottom.
diff: @@ -76,18 +76,18 @@ describe('TextForEvent', () => {
  expect(renderComponent(component)).toBe(expectedText);
  });
  - it("shows generic text when multiple messages were pinned", () => {
  - const event = mockPinnedEvent(['message-1', 'message-2', 'message-3'], ['message-1']);
  + it("mentions message when a single message was unpinned, with a single message previously pinned", () => {
  + const event = mockPinnedEvent([], ['message-1']);
  const plainText = textForEvent(event);
  const component = renderer.create(textForEvent(event, true));
  - const expectedText = "@foo:example.com changed the pinned messages for the room.";
  + const expectedText = "@foo:example.com unpinned a message from this room. See all pinned messages.";
  expect(plainText).toBe(expectedText);
  expect(renderComponent(component)).toBe(expectedText);
  });
  - it("mentions message when a single message was unpinned, with a single message previously pinned", () => {
  - const event = mockPinnedEvent([], ['message-1']);
  + it("mentions message when a single message was unpinned, with multiple previously pinned messages", () => {
  + const event = mockPinnedEvent(['message-2'], ['message-1', 'message-2']);
  const plainText = textForEvent(event);
  const component = renderer.create(textForEvent(event, true));
  @@ -96,12 +96,12 @@ describe('TextForEvent', () => {
  expect(renderComponent(component)).toBe(expectedText);
  });
  - it("mentions message when a single message was unpinned, with multiple previously pinned messages", () => {
  - const event = mockPinnedEvent(['message-2'], ['message-1', 'message-2']);
  + it("shows generic text when multiple messages were pinned", () => {
  + const event = mockPinnedEvent(['message-1', 'message-2', 'message-3'], ['message-1']);
  const plainText = textForEvent(event);
  const component = renderer.create(textForEvent(event, true));
  - const expectedText = "@foo:example.com unpinned a message from this room. See all pinned messages.";
  + const expectedText = "@foo:example.com changed the pinned messages for the room.";
  expect(plainText).toBe(expectedText);
  expect(renderComponent(component)).toBe(expectedText);
  });
  