Address bug fixes sent in by ZD 21534#10168

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night1rider wants to merge 9 commits intowolfSSL:masterfrom

night1rider:zd-21534

Commits on Apr 7, 2026

Add test for wolfSSL_use_AltPrivateKey_Id to verify successful key ID allocation
night1rider
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Fix inverted AllocDer success check in wolfSSL_use_AltPrivateKey_Id
night1rider
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Add test for wolfSSL_use_AltPrivateKey_Label to verify successful key label allocation
night1rider
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Fix inverted AllocDer success check in wolfSSL_use_AltPrivateKey_Label
night1rider
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Fix == vs = in wolfSSL_add1_chain_cert so ret captures up_ref result instead of comparing against it, matching wolfSSL_CTX_add1_chain_cert
night1rider
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Fix DH encoding check in wolfSSL_CTX_set_tmp_dh: && to || and < to <= to catch single-param failure and zero-length, matching wolfSSL_set_tmp_dh.
night1rider
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Copy-paste error in ProcessBufferCertPublicKey and ProcessBufferCertAltPublicKey, Fix #endif comments closing WOLFSSL_SM2/SM3 blocks, not HAVE_ED25519
night1rider
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Commits on Apr 8, 2026

Fix cast-away-const in ws_ctx_ssl_set_tmp_dh: allocate DerBuffer with actual size and copy data instead of pointing at caller's const buffer, which caused FreeDer to free non-owned memory.
night1rider
committed

Commits on Apr 10, 2026

Add DH regression test and incremement ref counter tests to api.c
night1rider
committed