fix: optimize lodash imports

[stipsan]

Description

The babel-plugin-lodash optimization appears to no longer be working. Look at the output of lib/router.esm.js for example and how it have this output:

import { intersection, difference, pick, isPlainObject, flatten, identity } from 'lodash';

This PR fixes it so that it generates this output:

import flatten from 'lodash/flatten.js';
import difference from 'lodash/difference.js';
import intersection from 'lodash/intersection.js';
import isPlainObject from 'lodash/isPlainObject.js';
import pick from 'lodash/pick.js';
import identity from 'lodash/identity.js';

This also fixes the ESM URL use case:

const {renderStudio} = await import('https://esm.sh/sanity') // Use `https://esm.sh/sanity@3.0.6` to reproduce the same error as seen at the time of this PR
// Uncaught SyntaxError: The requested module '/v99/lodash@4.17.21/es2022/lodash.js' does not provide an export named 'isPlainObject' (at router.js:formatted:5:56)

What to review

Since it's just an optimisation step it shouldn't break any existing behaviour or introduce new behaviour, beyond a smaller bundle size.

Notes for release

• fix: lodash imports are optimized again

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test-studio	✅ Ready (Inspect)	Visit Preview	💬 Add your feedback	Dec 15, 2022 at 11:37AM (UTC)

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[bjoerge]

:yay-cat: