Show server version updated info for first detected update

In case the server has never been updated yet, the info dialog was not opened after an update.
This was caused due to the current version always being undefined, since it was never written to the local storage

src/components/util/ServerUpdateChecker.tsx

@@ -64,6 +64,12 @@ export const ServerUpdateChecker = () => {
             : undefined;
 
     const isSameAsCurrent = !version || !serverVersion || serverVersion === version;
+
+    const saveInitialVersion = !serverVersion && !!version;
+    if (saveInitialVersion) {
+        setServerVersion(version);
+    }
+
     if (!isSameAsCurrent && !open) {
         setOpen(true);
     }