[BUG] VPM Resolver will be added to projects without resolver during migration

[anatawa12]

Describe the bug

VPM Resolver will be added to projects without resolver during migration.

In my project, VPM Resolver is omitted and I'm using another resolver because VPM Resolver is a embedded package and vrc-get resolver is a git UPM package.
A friend also excludes VPM Resolver from their project (and uses another resolver) for some reasons.

To Reproduce

1. create Unity 2019 project
2. remove VPM Resolver
3. Migrate the project to 2022
4. Now VPM Resolver is added

Expected behavior

VPM resolver should not be added if VPM resolver is not on the package list

Screenshots

No response

Related Product

VCC (VRChat Creator Companion)

Product Version

2.2.2

OS

Windows 11

Additional context

I think this is related to #406

[orels1]

Not related to #406. Similar to the Legacy SDK migration - the 2022 migration is also always adding a resolver, as it is desired in most cases.

We can adjust it to check before adding in the future though.

[orels1]

Available in VCC 2.2.4