fix(flow-react): avoid Flow-React portal outlet removal conflicts (#2… #20187

All 7 525 tests pass, 56 skipped in 1h 30m 22s

1 159 files ± 0 1 159 suites ±0 1h 30m 22s ⏱️ - 6m 7s
7 581 tests ± 0 7 525 ✅ ± 0 56 💤 ±0 0 ❌ ±0
7 940 runs +21 7 875 ✅ +22 65 💤 - 1 0 ❌ ±0

Results for commit 4cdf24a. ± Comparison against earlier commit c72e2a4.