docs: Update docs for TS support, dropped YAML support

Summary:
YAML support was dropped entirely in https://github.com/react/metro/releases/tag/v0.86.0 but I missed removing the deprecation notice in the docs.

Also tweak the TS support wording now that the minimum Node.js version is 22.13.0 (so all versions we support do support TS, but 22.13-22.17 require a flag), and clarify that this is type stripping, not compilation - so erasable TS only.

Changelog: Internal

Differential Revision: D114592227

fbshipit-source-id: 285317eea23dc3707b653e1359b422866db9e45f

Author: robhogan

docs/Configuration.md

@@ -13,15 +13,9 @@ A Metro config can be created in the following file formats (ordered by priority
 
 You can also give a custom file to the configuration by specifying `--config <path/to/config>` when calling the CLI.
 
-:::warning Deprecated
-
-YAML config files (`.yaml`, `.yml`) are **deprecated** and will be removed in a future version of Metro. Please migrate to a JavaScript, TypeScript, or JSON config file. When Metro loads a YAML config file, it will display a deprecation warning.
-
-:::
-
 :::info TypeScript Config Support
 
-TypeScript config files are supported in Node.js 24.0.0+ or Node.js 22.6.0+ with the `--experimental-strip-types` flag. If your Node.js version doesn't support loading TypeScript natively, you'll see an error with instructions when attempting to load a TypeScript config file.
+Metro uses Node.js native TypeScript support to load `.*ts` config files. For Node.js 22.18.0 and later or 24.0.0 later, _erasable_ TypeScript is supported out of the box. For Node.js < 22.18.0, use the `--experimental-strip-types` flag. See https://nodejs.org/learn/typescript/run-natively.
 
 :::