onChange `modified` property remains false when file component is updated

[kaaviya-min]

Describe the bug
The onChange callback in the form component does not properly detect modifications when file upload fields are updated. The modified parameter remains false for file components, preventing the form state from being saved. This issue does not affect other field types (text inputs, dropdowns, etc.), which correctly report modified: true when changed.

Expected behavior

• File upload/removal should trigger onChange with modified: true
• Form state should update to reflect file changes

Screenshots
N/A

Desktop (please complete the following information):

• Browser Chrome
• Version 143

[kaaviya-min]

@lane-formio @formiobot