[5.x]: Nice if asset default location used the single location by default

[darrylhein]

What happened?

Description

When changing an Asset field type from a single location to multiple, the Default Upload Location goes to the first (I think) location. It'd be nice if it kept the original single location. All the volumes are checked off.

Before:

Default location after:

In this case, it would be nice (maybe expected) that the default location would be Design Features.

Craft CMS version

5.9.0

PHP version

8.4

Operating system and version

No response

Database type and version

No response

Image driver and version

No response

Installed plugins and versions

[linear[bot]]

CMS-1783