Merge branch...

Merge branch 'mwaw/change_base_instrumentation_classes_to_take_definition_as_initializer_argument' into 'master'

Pass metric definition to instrumentation class

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/98187



Merged-by: Bob Van Landuyt <bob@gitlab.com>
Approved-by: Niko Belokolodov <nbelokolodov@gitlab.com>
Approved-by: Bob Van Landuyt <bob@gitlab.com>
Co-authored-by: Mikolaj Wawrzyniak <mwawrzyniak@gitlab.com>