Toggle overwrite option from Export options modal

[SignpostMarv]

I have a lot of issues to go through, so in order to make it easier for me to help you, I ask that you please try these things first

• Check out all the menus and keyboard shortcuts. Maybe the feature already exists?
• Try with the newest version from GitHub
• Read the documentation and FAQ, Known issues, Troubleshooting to see if the feature already exists
• See if someone already suggested this under Issues or Discussions

Description

Overwrite is in settings, but this is a setting related to the Export workflow- would prefer it be available in the Export options modal.