Removing unsupported muon isolation WP and adding new supported ones

Removing unsupported muon isolation WP and adding new supported ones. Updating the validation configuration files as the previously used muon isolation WPs are no longer supported. Closes ANALYSISTO-757.

This MR is important as the changes are needed for successful tests of !20869 (merged), the tests for that MR are failing because in the CI tests in AT we ran with a configuration that is no longer supported, this is fixed in this MR.

Furthermore, removing RC variables from the tests as these fail with the most recent ptags.

Tagging @spalazzo,@mvanadia and @pjacka