:bug: Return on wrong type in event filters

[mhmxs]

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What type of PR is this?

/kind bug

What this PR does / why we need it:

First of all, i know the bugfix is fixing a case which theoretically doesn't exists. But for correctness I think it makes sense to fix these type conversions. Otherwise there would be some panic, which also makes sense.

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged): Fixes #

Special notes for your reviewer:

Checklist:

• [X] squashed commits
• [ ] includes documentation
• [ ] includes emojis
• [ ] adds unit tests
• [ ] adds or updates e2e tests

Release note: