Disable Test for TaskTapPointerEventListener when it is removed

The test injects taps directly into mTapDetector, which is removed when
the flag is enabled. Add RequiresFlagsDisabled condition to the affected
test case.

Bug: 311393948
Bug: 318372941
Test: atest DisplayContentTests
Change-Id: Ibeedbbb7c7c16b0f80cba35f1cbf8a1b6ae9b558