`resolve shoot` command should not require the permission to list projects

[petersutter]

What happened:
When running the resolve shoot command as regular project admin, it should succeed. Currently it fails with the error:

gardenctl resolve shoot
Error: failed to fetch project by namespace: failed to list projects: projects.core.gardener.cloud is forbidden: User "me@example.com" cannot list resource "projects" in API group "core.gardener.cloud" at the cluster scope

when o.CurrentTarget.ProjectName() is not empty, it should take this value to read the project instead of calling

gardenctl-v2/pkg/cmd/resolve/options.go

Lines 239 to 242 in cd14839

	project, err := o.GardenClient.GetProjectByNamespace(ctx, shoot.Namespace)
	if err != nil {
	return err
	}

What you expected to happen:

How to reproduce it (as minimally and precisely as possible):

Anything else we need to know:

Environment: