Update ESLint config for TypeScript files

[manzoorwanijk]

Updates ESLint config as discussed in #40555 (comment)

Proposed changes:

• Disable certain JSDoc related ESLint rules for TypeScript files which make types redundant.

Other information:

• Have you written new tests for your changes, if applicable?
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Does this pull request change what data or activity we track or use?

Testing instructions:

• Open a TS file
• Remove the JSDoc type for any param
• Remove the JSDoc type for return
• Confirm that there is no error
• Do the same for a js file
• Confirm that the errors show up as before

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[anomiex]

This seems to disable some things that are unrelated to types, and doesn't disable one thing I thought it would. Details inline.

[anomiex]

Also, you may as well clean up the now-redundant config at

jetpack/projects/packages/jetpack-mu-wpcom/eslint.config.mjs

Lines 15 to 22 in 53ab9ef

	{
	files: typescriptFiles,
	rules: {
	// Not needed for TypeScript.
	'jsdoc/require-param-type': 'off',
	'jsdoc/require-returns-type': 'off',
	},
	},

since these are now disabled globally for TS.

[manzoorwanijk]

Also, you may as well clean up the now-redundant config at

jetpack/projects/packages/jetpack-mu-wpcom/eslint.config.mjs

Lines 15 to 22 in 53ab9ef

	{
	files: typescriptFiles,
	rules: {
	// Not needed for TypeScript.
	'jsdoc/require-param-type': 'off',
	'jsdoc/require-returns-type': 'off',
	},
	},

since these are now disabled globally for TS.

Nuked.