CI actions with UI reports fail for 3rd party contributors

[matejcik]

e.g. this: https://github.com/trezor/trezor-firmware/actions/runs/7815616038/job/21320363060

the error caused by tokens / aws rights / whatever must not fail the pipeline. it should come up green, otherwise we don't know if the contribution actually failed any of the tests

assigned to @vdovhanych but cc @mmilata too if you have a solution in mind?