feat: 15448: In-memory virtual maps support #41543

All 8 tests pass in 11m 15s

9 files ±0 9 suites ±0 11m 15s ⏱️ + 2m 52s
8 tests ±0 8 ✅ ±0 0 💤 ±0 0 ❌ ±0
9 runs ±0 9 ✅ ±0 0 💤 ±0 0 ❌ ±0

Results for commit 59fc16a. ± Comparison against earlier commit 407d2be.