* fix: apply automatic eslint fixes
* lint: allow hashbang comment for tiddlywiki.js
* lint: first back of manual lint fixes for unused vars
* lint: added more fixes for unused vars
* lint: missed files
* lint: updated eslint config with selected rules from #9669
This fixes a bug in #3634, and refines the logic so that the warning is only given if the incoming tiddler exists as a shadow tiddler. (In my case I have several draft core modules inactive in my notes wiki and they were erroneously suppressed from the upgrade).