Merge branch 'ph/339918/fixForkApprovalRulesApiRequest' into 'master'

Fixes approval rules not loading correctly for forks

See merge request gitlab-org/gitlab!72372

app/views/shared/issuable/form/_branch_chooser.html.haml

@@ -23,7 +23,7 @@
       = html_escape(_('From %{code_open}%{source_title}%{code_close} into')) % { source_title: source_title, code_open: '<code>'.html_safe, code_close: '</code>'.html_safe }
 
     - if issuable.new_record?
-      %code#js-target-branch-title= target_title
+      %code#js-target-branch-title{ data: { branch_name: @merge_request.target_branch } }= target_title
       &nbsp;
       = link_to _('Change branches'), mr_change_branches_path(issuable)
     - elsif issuable.for_fork?

ee/app/assets/javascripts/approvals/mount_mr_edit.js

@@ -9,8 +9,10 @@ export default function mountApprovalInput(el) {
     return null;
   }
 
+  const targetBranchTitle = document.querySelector('#js-target-branch-title');
   const targetBranch =
-    document.querySelector('#js-target-branch-title')?.textContent ||
+    targetBranchTitle?.dataset?.branchName ||
+    targetBranchTitle?.textContent ||
     document.querySelector('#merge_request_target_branch')?.value;
 
   const store = createStore(