fix(ci): make JBR setup-java resilient to GitHub API rate limits (#5680)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

.github/actions/gradle-setup/action.yml

@@ -39,13 +39,21 @@ runs:
         key: jbr-21-${{ runner.os }}-${{ runner.arch }}
 
     - name: Set up JetBrains JDK 21 (for Compose Desktop)
-      if: inputs.install_jetbrains_jdk == 'true'
+      if: inputs.install_jetbrains_jdk == 'true' && steps.cache-jbr.outputs.cache-hit != 'true'
+      id: setup-jbr
+      continue-on-error: true
       uses: actions/setup-java@v5
       with:
         java-version: '21'
         distribution: 'jetbrains'
+        check-latest: false
         token: ${{ github.token }}
 
+    - name: JBR setup skipped or failed — Gradle will auto-provision via Foojay
+      if: inputs.install_jetbrains_jdk == 'true' && steps.cache-jbr.outputs.cache-hit != 'true' && steps.setup-jbr.outcome == 'failure'
+      shell: bash
+      run: echo "::warning::JBR setup-java failed (likely GitHub API rate limit). Gradle will auto-provision JBR via Foojay toolchain resolver."
+
     - name: Setup Gradle
       uses: gradle/actions/setup-gradle@v6
       with: