fix(compiler): Handle 'using' and 'await using' declarations

[shivas1432]

Fixes #35171

Hey! This PR fixes a bug where React Compiler was breaking the new JavaScript using syntax.

The Problem:
When you write code like this:
using resource = new Disposable("render");

React Compiler was stripping out the using keyword and turning it into:
new Disposable("render");

This completely breaks the disposal mechanism - Symbol.dispose() never gets called and you get resource leaks.

What I Did:
I added a check in BuildHIR.ts (around line 868) that makes the compiler bail out when it sees using or await using declarations. Now instead of breaking your code, it just skips compiling that component and shows a "not yet supported" message.

Changes:

• File: compiler/packages/babel-plugin-react-compiler/src/HIR/BuildHIR.ts
• Added detection for using and await using
• Compiler now bails out instead of incorrectly transforming

Testing:
I tested this with the example from issue #35171. Now the disposal works correctly and the compiler doesn't mess up the using syntax.

This is a temporary fix - in the future we could fully support using by properly tracking disposal through the compilation pipeline. But for now, this at least prevents the bug.

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[josephsavona]

Thanks for the interest in contributing! Requesting changes because we need a test fixture for this, which will likely require some updates to babel in our test infra to enable new syntax (which we don't want to depend on for the actual release version of the compiler). So this is definitely a bit involved.

Also, files have to be formatted