For #5574, properly search for dirty file indicator in new DOM hierarchy for InlineTextEditor
For #5576, Properly handle hiding blank line at end of document
For #5610, clear existing line-hiding markers before applying new ones to avoid overlap/conflicts
For #5571, always copy the selector group to the rule name
For #5609, insert the new range into the DOM at the correct index
For #5608, ensure that we don't try to update the New Rule button UI until the inline editor is loaded and we have the stylesheet info
Merge pull request #5616 from adobe/nj/new-rule-fixes

Fixes for CSS "New Rule" issues