refactor: prevent duplicated title for index page by making prop optional

src/components/PageIndex/PageIndex.tsx

@@ -1,6 +1,6 @@
 import { MomentInput } from "moment";
 
-import { ConfigData, radarName, radarNameShort } from "../../config";
+import { ConfigData, radarName } from "../../config";
 import { useMessages } from "../../context/MessagesContext";
 import { formatRelease } from "../../date";
 import { HomepageOption, Item, featuredOnly } from "../../model";
@@ -38,7 +38,7 @@ export default function PageIndex({
     config.homepageContent === HomepageOption.both;
   return (
     <Fadeable leaving={leaving} onLeave={onLeave}>
-      <SetTitle title={radarNameShort} />
+      <SetTitle />
       <div className="headline-group">
         <HeroHeadline alt={`Version #${numberOfReleases}`}>
           {radarName}

src/components/SetTitle.tsx

@@ -3,12 +3,12 @@ import { useEffect } from "react";
 import { setTitle } from "../config";
 
 type SetTitleProps = {
-  title: string;
+  title?: string;
 };
 
 export default function SetTitle({ title }: SetTitleProps) {
   useEffect(() => {
-    setTitle(document, title)
+    setTitle(document, title);
   }, [title]);
 
   return null;