fix: Reachable dependency with get-url

[curt-weber]

Description At Git::reachable when checking the ls-remote it doesn't pass --get-url which can be useful with git config overrides (such as insteadOf).

Steps To Reproduce

1. Add a rewrite: `git config --global url."[email protected]:ORG/repo.git".insteadOf "[email protected]:ORG/repo.git"
2. Attempt to pull dependencies: very_good packages get
3. Notice that it doesn't respect rewrite
4. Attempt to pull dependencies: flutter pub get
5. Respects rewrite

Expected Behavior If --get-url is passed the reachable check will resolve similarly to the actual pull

Additional context

• insteadOf documentation