Rollup merge of #113020 - AnthonyKalaitzis:add-tests-impl-via-obj-unless-denied, r=compiler-errors

Add tests impl via obj unless denied

Fixes #112737

Add simple tests to check feature change in #112320 is performing as expected.

Note:

- Unsure about filenames, locations & function signature names (tried to make them something sensible)

Author: matthiaskrgr