Deduplication and type checking

[stenslae]

• Added authorized_key type checking extract the embedded key type directly from the SSH wire-format blob rather than using wolfSSH_QueryKey().
• Added a makeKey function pointer to CompositeTradOps.
• Deduplicated ECDSA Encoding
• Introduced WOLFSSH_MLDSA_COMPOSITE_ID_CASES for redundant switch cases.
• Centralized maximum public key sizing behind a new WOLFSSH_MLDSA_MAX_PUB_KEY_SZ macro
• Switched to dynamically allocating MlDsaKey and large public key buffers in wolfSSH_MakeMlDsaCompositeKey() and GetOpenSshKeyMlDsaComposite() when WOLFSSH_SMALL_STACK is defined.
• Added test coverage

[wolfSSL-Fenrir-bot]

Fenrir Automated Review — PR #1159

Scan targets checked: wolfssh-bugs, wolfssh-src

Findings: 5
5 finding(s) posted as inline comments (see file-level comments below)

This review was generated automatically by Fenrir. Findings are non-blocking.