Sync core to HEAD of typespec/microsoft#11007: fix null LRO error response bodies

[Copilot]

Bumps the core submodule to 22a529e and applies the corresponding generated-file updates. The core fix changes management LRO error response handling so a null response body produces new byte[0] instead of null.

Core change (in typespec)

• FluentServiceClientTemplate.java: responseBody == null ? null → new byte[0] to avoid NPE when service returns no body on LRO error
• Adds FluentServiceClientTemplateTests unit test

This repo

• Core submodule → 22a529e
• Regenerated 14 management *ClientImpl.java files in typespec-tests to reflect the template change

// before
this.responseBody = responseBody == null ? null : responseBody.getBytes(StandardCharsets.UTF_8);

// after
this.responseBody = responseBody == null ? new byte[0] : responseBody.getBytes(StandardCharsets.UTF_8);