fix: widget FileButton to use mime types

widget/src/components/buttons/FileButton.tsx

@@ -1,14 +1,16 @@
 /*
- * Copyright © 2024 Hexastack. All rights reserved.
+ * Copyright © 2025 Hexastack. All rights reserved.
  *
  * Licensed under the GNU Affero General Public License v3.0 (AGPLv3) with the following additional terms:
  * 1. The name "Hexabot" is a trademark of Hexastack. You may not use this name in derivative works without express written permission.
  * 2. All derivative works must include clear attribution to the original creator and software, Hexastack and Hexabot, in a prominent location (e.g., in the software's "About" section, documentation, and README file).
  */
 
-import React, { ChangeEvent } from "react";
+
+import React, { ChangeEvent, useMemo } from "react";
 
 import { useChat } from "../../providers/ChatProvider";
+import { MIME_TYPES } from "../../utils/attachment";
 import FileInputIcon from "../icons/FileInputIcon";
 
 import "./FileButton.scss";
@@ -23,12 +25,17 @@ const FileButton: React.FC = () => {
       setFile && setFile(e.target.files[0]);
     }
   };
+  const acceptedMimeTypes = useMemo(
+    () => Object.values(MIME_TYPES).flat().join(""),
+    [],
+  );
 
   return (
     <div className="sc-user-input--file-wrapper">
       <button className="sc-user-input--file-icon-wrapper" type="button">
         <FileInputIcon />
         <input
+          accept={acceptedMimeTypes}
           type="file"
           id="file-input"
           onChange={handleChange}