Conform more of the codebase with noImplicitAny and strictNullChecks (#25174

* Conform more of the codebase with `noImplicitAny` and `strictNullChecks`

* Fix tests

* Update src/vector/app.tsx

test/unit-tests/vector/url_utils-test.ts

@@ -17,7 +17,6 @@ limitations under the License.
 import { parseQsFromFragment, parseQs } from "../../../src/vector/url_utils";
 
 describe("url_utils.ts", function () {
-    // eslint-disable-next-line @typescript-eslint/ban-ts-comment
     // @ts-ignore
     const location: Location = {
         hash: "",