External ObjectStores provided by the user are taken into account into the default quota

[davelopez]

Found by a user and reported by @wm75

Galaxy Version and/or server at which you observed the bug
Galaxy Version: 24.1
Commit: (run git rev-parse HEAD if you run this Galaxy server)

Browser and Operating System
Operating System: Windows, Linux, macOS
Browser: Firefox, Chrome, Chrome-based, Safari

To Reproduce
Steps to reproduce the behavior:

1. Add a user object store from a template in User -> Preferences -> Manage Your Storage Locations
2. Change the default storage location for your history
3. Upload a file to the history
4. Check that your default disk quota gets increased

Expected behavior
The default quota should not be affected by external storage provided by the user

Screenshots

Here is a single history with a single file stored in an S3 bucket that fills the user quota.