ESM: figure out the monaco-standalone ESM build story

[bpasero]

Now that main runs with ESM, we had to disable some monaco related checks:

vscode/.github/workflows/monaco-editor.yml

Lines 68 to 98 in 6b924c5

	# - name: Editor Distro & ESM
	# run: yarn gulp editor-esm
	# - name: Editor ESM sources check
	# working-directory: ./test/monaco
	# run: yarn run esm-check
	# - name: Typings validation prep
	# run: |
	# mkdir typings-test
	# - name: Typings validation
	# working-directory: ./typings-test
	# run: |
	# yarn init -yp
	# ../node_modules/.bin/tsc --init
	# echo "import '../out-monaco-editor-core';" > a.ts
	# ../node_modules/.bin/tsc --noEmit
	# - name: Package Editor with Webpack
	# working-directory: ./test/monaco
	# run: yarn run bundle-webpack
	# - name: Compile Editor Tests
	# working-directory: ./test/monaco
	# run: yarn run compile
	# - name: Run Editor Tests
	# timeout-minutes: 5
	# working-directory: ./test/monaco
	# run: yarn test

//cc @alexdima