Add missing tests queryhandler.spec.ts: in Page

[kblok]

queryhandler.spec.ts: in Page: should query existing element queryhandler.spec.ts: in Page: should return empty array for non-existing element queryhandler.spec.ts: in Page: should return first element queryhandler.spec.ts: in Page: should return multiple elements queryhandler.spec.ts: in Page: should pierce shadow DOM queryhandler.spec.ts: in Page: should query deeply nested text queryhandler.spec.ts: in Page: should query inputs queryhandler.spec.ts: in Page: should not query radio queryhandler.spec.ts: in Page: should query text spanning multiple elements queryhandler.spec.ts: in Page: should clear caches queryhandler.spec.ts: in Page: should query existing element queryhandler.spec.ts: in Page: should return empty array for non-existing element queryhandler.spec.ts: in Page: should return first element queryhandler.spec.ts: in Page: should return multiple elements