move deleted project check into project service read

[danawillow]

Previously the check occurred in the list call, which was called in Create and Read. There's no good reason why a user should be trying to set a new service enabled on a deleted project, so I just moved the check to only happen on read.

Fixes hashicorp/terraform-provider-google#6013.

Release Note Template for Downstream PRs (will be copied)

* serviceusage: fixed issue where `google_project_services` attempted to read a project before enabling the API that allows that read

[modular-magician]

Hi! I'm the modular magician. Your PR generated some diffs in downstreams - here they are.

Diff report:

Terraform GA: Diff ( 2 files changed, 15 insertions(+), 14 deletions(-))
Terraform Beta: Diff ( 2 files changed, 15 insertions(+), 14 deletions(-))

[modular-magician]

Hi! I'm the modular magician. Your PR generated some diffs in downstreams - here they are.

Diff report:

Terraform GA: Diff ( 2 files changed, 16 insertions(+), 15 deletions(-))
Terraform Beta: Diff ( 2 files changed, 16 insertions(+), 15 deletions(-))

[c2thorn]

Nice solution to this side effect!