Fix AKID CA lookup

[julek-wolfssl]

The authorityCertIssuer field refers to the Issuer field of the CA being looked up and not its Subject field.

Addresses zd#20860

[devin-ai-integration]

🛟 Devin Lifeguard found 1 likely issues in this PR

• check-all-return-codes snippet: Wrap wc_FreeMutex(&cm.caLock) with EXPECT/ASSERT handling, e.g. ExpectIntEQ(wc_FreeMutex(&cm.caLock), 0);, to ensure its return code is checked.

@julek-wolfssl
please take a look at the above issues which Devin flagged. Devin will not fix these issues automatically.

[julek-wolfssl]

Retest this please RequestAbortedException