Small refactor of URLParams stuff

Splits out the room locartion parsing from everything else to avoid
one function that fills out different parts of its return struct
depending on its args.

src/initializer.tsx

@@ -61,7 +61,7 @@ export class Initializer {
     languageDetector.addDetector({
       name: "urlFragment",
       // Look for a language code in the URL's fragment
-      lookup: () => getUrlParams(true).lang ?? undefined,
+      lookup: () => getUrlParams().lang ?? undefined,
     });
 
     i18n
@@ -94,7 +94,7 @@ export class Initializer {
     }
 
     // Custom fonts
-    const { fonts, fontScale } = getUrlParams(true);
+    const { fonts, fontScale } = getUrlParams();
     if (fontScale !== null) {
       document.documentElement.style.setProperty(
         "--font-scale",