CSS framework selection needs to no longer fully clear out files

[retlehs]

as of #1885 (stylelint addition) we can no longer fully clear out files after someone has selected a CSS framework besides bootstrap

sage/app/lib/Sage/PostCreateProject.php

Lines 43 to 48 in 6516998

	$files_to_clear = [
	'resources/assets/styles/components/_comments.scss',
	'resources/assets/styles/components/_forms.scss',
	'resources/assets/styles/components/_wp-classes.scss',
	'resources/assets/styles/layouts/_header.scss',
	];

these files need to still maintain the newly added comments at the top

discourse thread: https://discourse.roots.io/t/yarn-build-failed-because-of-a-stylelint-error/9792

[samrap]

I'll try and take a look at this.