Enable surfacing false positives for vulnerabilities

* Users can now see false positive data on vulnerabilities

Changelog: added

config/feature_flags/development/vulnerability_flags.yml

@@ -2,7 +2,7 @@
 name: vulnerability_flags
 introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/66775
 rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/340203
-milestone: '14.2'
+milestone: '14.3'
 type: development
 group: group::static analysis
-default_enabled: false
+default_enabled: true