fix: increase rejection delay for opening files with legacy api (#8961)

* Increased input change interval to 1000 ms to fix IOS 18 file opening issue

* increase more

---------

Co-authored-by: dwelle <5153846+dwelle@users.noreply.github.com>

packages/excalidraw/data/filesystem.ts

@@ -14,7 +14,7 @@ import type { FileSystemHandle } from "browser-fs-access";
 
 type FILE_EXTENSION = Exclude<keyof typeof MIME_TYPES, "binary">;
 
-const INPUT_CHANGE_INTERVAL_MS = 500;
+const INPUT_CHANGE_INTERVAL_MS = 5000;
 
 export const fileOpen = async <M extends boolean | undefined = false>(opts: {
   extensions?: FILE_EXTENSION[];