Add Cipher.getInstance("AES") support

[cconlon]

This PR adds support for the generic "AES" Cipher type (ex: Cipher.getInstance("AES");). Both SunJCE and Bouncy Castle map this to "AES/ECB/PKCS5Padding" internally, so we do the same here for compatibility.

This fixes one OpenJDK SunJCE test: crypto/Cipher/GCMAPI.java

[Copilot]

Pull Request Overview

This PR adds support for the generic "AES" cipher specification to maintain compatibility with SunJCE and Bouncy Castle providers. The generic "AES" transform is mapped to "AES/ECB/PKCS5Padding" following the behavior of other standard providers.

• Registers "AES" as an alias to the existing AES/ECB/PKCS5Padding cipher implementation
• Adds comprehensive test coverage for the new generic AES cipher support
• Updates documentation to reflect the new alias availability

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
src/main/java/com/wolfssl/provider/jce/WolfCryptProvider.java	Registers the "AES" cipher alias mapping to AES/ECB/PKCS5Padding
src/test/java/com/wolfssl/provider/jce/test/WolfCryptCipherTest.java	Adds "AES" to test arrays, implements dedicated test method, and updates IV consistency logic
README_JCE.md	Documents the new AES alias in the supported algorithms list

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