Update kernels for non-fatal (part 21) (#2121)

Summary:
Pull Request resolved: https://github.com/pytorch/executorch/pull/2121

Update kernels and tests starting with 'z'.

Note to reviewers: Because the changeset for non-fatal touches so many files, I've split into a number of diffs. The tests will not all pass until the final diff, given that non-fatal tests are switched on in the first diff but tests are not updated until the respective later diff. See revision 6.6 of D53251417 to observe the full change-set passing CI.

Bypassing checks due to pre-existing failures.
bypass-github-export-checks
bypass-github-executorch-ci-checks

Reviewed By: manuelcandales

Differential Revision: D54182776

fbshipit-source-id: 36e1813de25880b880e37e18d5597a6c44990c32