Fix auto debugId for styleVariants

[mrm007]

Looks like a bug slipped through in #827:

vanilla-extract/packages/babel-plugin-debug-ids/src/index.test.ts

Lines 413 to 417 in c70aaaf

	const four = styleVariants({
	red: {
	color: 'red'
	}
	}, 'myDebugValue', \\"four\\");"

This fix is also needed in #955 where layer() can have up to 2 arguments:

const lib = layer();
const utils = layer({ parent: lib });
const reset = layer({ parent: lib }, 'my-reset');
const other = layer('my-other'); // don't add a debug id

[changeset-bot]

🦋 Changeset detected

Latest commit: 1c6d3ef

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

This PR includes changesets to release 2 packages

Name	Type
@vanilla-extract/babel-plugin-debug-ids	Patch
@vanilla-extract/integration	Patch

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[jahredhope]

Makes sense. Nice work.