It also revealed 3 failing earlydata tests with two backends on Linux,
seen earlier on macOS:
```
LibreSSL before: 571 passed, 141 skipped in 45.34s
LibreSSL after: 736 passed, 95 skipped in 68.08s
aws-lc before: 571 passed, 141 skipped in 78.87s
aws-lc after: 736 passed, 95 skipped in 66.71s
BoringSSL before: 511 passed, 201 skipped in 46.47s
BoringSSL after: 676 passed, 155 skipped in 63.96s
GnuTLS before: 515 passed, 197 skipped in 48.31s
GnuTLS after: 688 passed, 140 skipped in 67.79s (3 failed)
wolfSSL before: 541 passed, 171 skipped in 52.49s
wolfSSL after: 714 passed, 114 skipped in 83.84s (3 failed)
OpenSSL before: 757 passed, 74 skipped in 65.43s
OpenSSL after: 757 passed, 74 skipped in 65.06s
OpenSSL-quic before: 741 passed, 90 skipped in 62.85s
OpenSSL-quic after: 741 passed, 90 skipped in 57.20s
quiche before: 511 passed, 201 skipped in 45.94s
quiche after: 664 passed, 167 skipped in 59.57s
```
Before: https://github.com/curl/curl/actions/runs/
19734972379
After: https://github.com/curl/curl/actions/runs/
19736703398?pr=19723
Failures address via:
0081c5b12627ddfb5d6e71198475dc9f95c0a53e #19730
Ref: #19724
Closes #19723