LDEV-4658 test case for unicode date times post java 21 #1223

All 3 492 tests pass, 208 skipped in 3m 41s

1 files ±0 1 424 suites ±0 3m 41s ⏱️ +7s
3 700 tests ±0 3 492 ✅ ±0 208 💤 ±0 0 ❌ ±0
3 827 runs ±0 3 598 ✅ ±0 229 💤 ±0 0 ❌ ±0

Results for commit a36f8b5. ± Comparison against earlier commit 5984f1d.