Merge branch '345398-enable-switch-toggle-self-managed' into 'master'

Enable new rich text to source toggle button in self-managed instances by default

See merge request gitlab-org/gitlab!77995

config/feature_flags/development/wiki_switch_between_content_editor_raw_markdown.yml

@@ -5,4 +5,4 @@ rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/345398
 milestone: '14.6'
 type: development
 group: group::editor
-default_enabled: false
+default_enabled: true