[RLlib] Adjust callback validation to account for `MultiCallback`.#50920

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simonsays1980 wants to merge 3 commits intoray-project:masterfrom simonsays1980:fix-validation-for-multi-callbacks

+164-3

Commits on Feb 26, 2025

Adjusted the validation of callbacks to account for 'MultiCallback' and added a test for callbacks.
simonsays1980
committed
Fixed linter error and added docstrings and comments. Furthermore, add the test to the BUILD file and removed an if-clause.
simonsays1980
committed

Commits on Feb 27, 2025

Fixed a naming error in BUILD.
simonsays1980
committed