The id (e.g. id_related_game) sat on the <search-select> wrapper, a
non-labelable custom element. Consequences:
- <label for="id_X"> focused nothing (a11y gap)
- .disabled / .focus() on #id_X silently no-oped
- add_purchase.ts needed a [data-search-select-search] descendant
workaround to gate related_game on the type field
id is now on the [data-search-select-search] <input>, making it a real
labelable, disableable control. add_purchase.ts drops the workaround
and gates via #id_related_game directly. E2e tests updated; new test
asserts label-click focuses the search box.
Closes#30
lukas
b816c68cb8
