Return current state when requesting deferral.

[alexsomesan]

Description

Returns current state durring planning and reading resources that require deferral.
This is to correlate with new expectations of Terraform core introduced in: hashicorp/terraform#35526

Testing this change requires running with an up-to-date build of Terraform, that includes the above mentioned PR. A build from current main would be ideal.

Acceptance tests

• Have you added an acceptance test for the functionality being added?
• Have you run the acceptance tests on this branch?

Output from acceptance testing:

Without this change:

$ go test -v -run '^TestAccKubernetesDeferredActions' ./kubernetes/test-dfa
=== RUN   TestAccKubernetesDeferredActions_2_step
    deferred_actions_test.go:28: Step 1/3 error: Error running pre-apply plan: exit status 1

        Error: Attempt to get attribute from null value

          on workspace.tf line 13, in resource "kubernetes_manifest" "demo_workspace":
          13:     kind       = kubernetes_manifest.crd_workspaces.object.spec.names.kind
            ├────────────────
            │ kubernetes_manifest.crd_workspaces.object is null

        This value is null, so it does not have any attributes.
--- FAIL: TestAccKubernetesDeferredActions_2_step (4.35s)
FAIL
FAIL	github.com/hashicorp/terraform-provider-kubernetes/kubernetes/test-dfa	5.424s
FAIL

With this change:

$ go test -v -run '^TestAccKubernetesDeferredActions' ./kubernetes/test-dfa
=== RUN   TestAccKubernetesDeferredActions_2_step
--- PASS: TestAccKubernetesDeferredActions_2_step (41.58s)
PASS
ok  	github.com/hashicorp/terraform-provider-kubernetes/kubernetes/test-dfa	42.673s

Release Note

Release note for CHANGELOG:

deferred actions: return unknown value instead of nil when requesting deferral of a planned resource change.

References

Community Note

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