fix(commandline): prevent unwanted scrolling on initial mouse entry (@byseif21) (monkeytypegame#6615)

### Description

fix this weird behavior scroll:


https://github.com/user-attachments/assets/73a7c9f2-f584-4d4a-9932-dbb565d99be6

Author: byseif21

frontend/src/ts/commandline/commandline.ts

@@ -765,6 +765,7 @@ const modal = new AnimatedModal({
     let lastHover: HTMLElement | undefined;
 
     suggestions.addEventListener("mousemove", async (e) => {
+      mouseMode = true;
       const target = e.target as HTMLElement | null;
       if (target === lastHover) return;