CVPN-2575: refresh PR10492 patch with latest upstream changes

[kp-mariappan-ramasamy]

PR #363 has been done before the upstream PR is merged and there were some changes in the upstream before merging.

So update our patch to reflect the exact changes.

Primarily renaming cflag in build.rs from WOLFSSL_DTLS13_5_9_0_COMPAT to WOLFSSL_DTLS13_ECHO_LEGACY_SESSION_ID.

Changes

Pull PR10492 head (6 commits, mailbox format), then trim:

• drop .wolfssl_known_macro_extras hunks (PATCH 1, 5) and entire PATCH 4/6 (revert pair) — that file's surrounding context does not exist in 5.9.1.
• rewrite test_dtls.h hunks in PATCH 2 to drop test_dtls_set_session_min_downgrade refs (also not in 5.9.1).
• space-prefix bare empty context lines so 'git apply' (Windows path in build.rs) accepts them.

[github-actions]

Code coverage summary for 3947675:

Filename                             Regions    Missed Regions     Cover   Functions  Missed Functions  Executed       Lines      Missed Lines     Cover    Branches   Missed Branches     Cover
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
wolfssl-sys/src/lib.rs                    34                 0   100.00%           4                 0   100.00%          22                 0   100.00%           0                 0         -
wolfssl/src/aes256.rs                    166                 8    95.18%          11                 0   100.00%         124                 4    96.77%           0                 0         -
wolfssl/src/chacha20_poly1305.rs          75                 2    97.33%           5                 0   100.00%          66                 2    96.97%           0                 0         -
wolfssl/src/context.rs                   401               173    56.86%          41                14    65.85%         286               110    61.54%           0                 0         -
wolfssl/src/error.rs                      44                12    72.73%           5                 1    80.00%          43                10    76.74%           0                 0         -
wolfssl/src/lib.rs                        81                15    81.48%          11                 1    90.91%          72                13    81.94%           0                 0         -
wolfssl/src/rng.rs                        71                 9    87.32%           6                 0   100.00%          42                 3    92.86%           0                 0         -
wolfssl/src/ssl.rs                      1277               337    73.61%          86                25    70.93%         862               251    70.88%           0                 0         -
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
TOTAL                                   2149               556    74.13%         169                41    75.74%        1517               393    74.09%           0                 0         -

✅ Region coverage 74% passes
✅ Line coverage 74% passes

[github-actions]

🚀 Release Plan

Crate	Previous version	New version	Release?	Comment
wolfssl-sys	4.1.0	4.2.0	✅ Release
wolfssl	7.1.0	7.2.0	✅ Release	after wolfssl-sys

[kp-weiwen-goh]

Verified commits in patch match PR description