Merge branch 'fix-ai-streaming' into 'master'

Fix Explain vulnerabilities with AI loading state

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/160295



Merged-by: Frédéric Caplette <fcaplette@gitlab.com>
Approved-by: Samantha Ming <sming@gitlab.com>
Reviewed-by: David Pisek <dpisek@gitlab.com>
Reviewed-by: Frédéric Caplette <fcaplette@gitlab.com>