Only run checks in pipelines with JDK variants

This commit updates the build pipeline to only run the checks
(formatting and tests) with the build when non-JDK8 variants are used
for sanity checks.

See gh-22490

ci/tasks/check-project.yml

@@ -0,0 +1,21 @@
+---
+platform: linux
+inputs:
+- name: git-repo
+outputs:
+- name: distribution-repository
+caches:
+- path: gradle
+params:
+  BRANCH:
+  CI: true
+  GRADLE_ENTERPRISE_ACCESS_KEY:
+  GRADLE_ENTERPRISE_CACHE_USERNAME:
+  GRADLE_ENTERPRISE_CACHE_PASSWORD:
+  GRADLE_ENTERPRISE_URL: https://ge.spring.io
+run:
+  path: bash
+  args:
+    - -ec
+    - |
+      ${PWD}/git-repo/ci/scripts/check-project.sh