fix(admin-verification): send request body on Approve action from queue list

Every action branch (reject, request-documents, request-revision, notes)
set common.body to a JSON payload, but the isApprove branch never did,
leaving body: undefined. axum's Json<ActionPayload> extractor rejects a
body-less POST before approve_verification even runs, so clicking Approve
in the queue-list modal silently failed (the error banner renders at the
top of the page, easy to miss behind the open modal).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

src/routes/admin/verification/index.tsx

@@ -502,6 +502,7 @@ export default function VerificationManagementPage() {
       let endpoint = '';
       if (isApprove) {
         endpoint = `/api/admin/verifications/${current.id}/approve`;
+        common.body = JSON.stringify({ notes: requestNote() || undefined });
       } else if (isReject) {
         endpoint = `/api/admin/verifications/${current.id}/reject`;
         common.body = JSON.stringify({ reason: requestNote() || 'Rejected by verifier' });