chore(website): migrate to eslint 9, fix linter issues where reasonab…

…ly possible (#3450)

* wip eslint 9

* fix some stuff

* fix some more stuff

* slightly fix result usage

* fix

* don't fix it...

* don't even attempt to fix it

* don't even attempt to fix it

* ignore more anys

* don't fix more stuff

* disable false positive

* ignore more anys, this should be fixed separately

* no useless class

* ignore more any

* another useless class

* ignore some lints in error handling

* fix some stuff

* fix

* I don't know about this one...

* fix

* fix

* fix

* fix

* fix

* fix

* fix it more

* fix it more

* try dev server test fix

* fix env variable name

* reference issue in TODOs

.github/workflows/website-playwright-dev-test.yml

@@ -49,3 +49,5 @@ jobs:
           npx playwright screenshot localhost:3000 test.png
           sleep 5
           npx playwright screenshot localhost:3000 test.png
+        env:
+          CONFIG_DIR: "tests/config"