Merge branch '353217_enable_ff_by_default' into 'master'

Use batches for pull request import jobs

See merge request gitlab-org/gitlab!82891

config/feature_flags/development/spread_parallel_import.yml

@@ -5,4 +5,4 @@ rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/353217
 milestone: '14.9'
 type: development
 group: group::source code
-default_enabled: false
+default_enabled: true