crypto: Add symcrypt backends for aes-kwp and xts-aes

[smalis-msft]

I think these are the final two?

[Copilot]

Pull request overview

Adds SymCrypt implementations for the remaining crypto primitives that previously lacked SymCrypt coverage, aligning the crypto support crate’s backend matrix across OpenSSL / Windows-native / SymCrypt.

Changes:

• Add a SymCrypt backend for XTS-AES-256.
• Add a SymCrypt backend for AES-KWP (RFC 5649).
• Update backend selection wiring and bump the pinned rust-symcrypt git revision in Cargo.lock.

Reviewed changes

Copilot reviewed 4 out of 5 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
support/crypto/src/xts_aes_256/symcrypt.rs	Implements XTS-AES-256 encrypt/decrypt using symcrypt::cipher::xts::XtsAesKey.
support/crypto/src/xts_aes_256/mod.rs	Enables symcrypt as a supported backend and wires sys to the SymCrypt implementation under cfg(symcrypt).
support/crypto/src/aes_kwp/symcrypt.rs	Implements AES-KWP wrap/unwrap using symcrypt::cipher::aes_kw::AesKwpKey, including key-size validation.
support/crypto/src/aes_kwp/mod.rs	Enables symcrypt as a supported backend and wires sys to the SymCrypt implementation under cfg(symcrypt).
Cargo.lock	Updates the pinned git commit for symcrypt / symcrypt-sys to pick up needed APIs.