Upgrade lint and dev tooling to latest majors

Bump eslint to ^10, @eslint/js to ^10, eslint-plugin-ember to ^13,
eslint-plugin-n to ^18, globals to ^17, stylelint to ^17,
stylelint-config-standard to ^40, sinon to ^22, and concurrently
to ^10.

Fix three new lint violations surfaced by the newer versions:
- Remove redundant padding-left after padding shorthand (stylelint 17)
- Remove useless null assignment before find() (eslint 10
  no-useless-assignment)
- Attach caught error as cause on rethrown Error (eslint 10
  preserve-caught-error)

app/controllers/search.js

@@ -179,10 +179,8 @@ export default class SearchController extends Controller {
     const targetName = params.selected || params.q;
 
     if (targetName && pois.length > 0) {
-      let matchedPlace = null;
-
       // 1. Exact Name Match
-      matchedPlace = pois.find(
+      let matchedPlace = pois.find(
         (p) =>
           p.osmTags &&
           (p.osmTags.name === targetName || p.osmTags['name:en'] === targetName)