Runs more Accessibility tests in TEST_MAPPING presubmit.

Do this by removing the include-filter that we only run tests
marked with the @Presubmit annotation. All tests are
currently passing, so lets run them all. We can keep the
exclude-@FlakyTest annotation for now to still be able to
temporarily exclude one-off failures while we investigate them.

See test results:
- https://screenshot.googleplex.com/3XRncXcgHvJoxHS
- https://screenshot.googleplex.com/C9PgA9765TrzyDM

Bug: 278920911
Test: (run presubmit...?)
Change-Id: I0ea6606c64287f501d7ea41ce236c6d0e614e382