Merge branch 'fix-non-float-value' into 'master'

Send value as a float to ai_response_time event

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/184086



Merged-by: Ankit Panchal <apanchal@gitlab.com>
Approved-by: Ankit Panchal <apanchal@gitlab.com>
Co-authored-by: Niko Belokolodov <nbelokolodov@gitlab.com>