feat: support parsing markdown via eslint-mdx natively

[JounQin]

The following is unnecessary anymore when using with eslint-mdx/eslint-plugin-mdx!

[
  {
    files: ["**/*.md"],
    rules: { "prettier/prettier": ["error", { parser: "markdown" }] },
  },
  {
    files: ["**/*.mdx"],
    rules: { "prettier/prettier": ["error", { parser: "mdx" }] },
  },
]

[changeset-bot]

🦋 Changeset detected

Latest commit: 535c3af

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
eslint-plugin-prettier	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[JounQin]

We can also support other HTML related ESLint plugins like https://github.com/yeonjuan/html-eslint or https://github.com/un-ts/eslint/tree/main/packages/markup

[JounQin]

@BPScott Any time to review?

[BPScott]

Code looks good to me.

Does this change mean older versions of any packages will stop working or is this a purely forwards-compatible change? I'm wondering if we need to call any "You should update this other package" stuff in the changeset

Added a few polishing thoughts inline as the changeset prettierrc, package patches and dependency changes seem unrelated to the changes to the worker.

[JounQin]

@BPScott This PR is totally backwards/forwards compatible and won't break anything. It's a minor enhancement.