Organizations Bugfix, handle missing policy when reading policy attachment

[dkujawski]

Description

Properly handle missing policy when reading policy attachment.

Relations

Closes #27231

References

Output from Acceptance Testing

$ make testacc TESTS=TestAccOrganizations_serial/PolicyAttachment/BUG27231 PKG=organizations
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go test ./internal/service/organizations/... -v -count 1 -parallel 20 -run='TestAccOrganizations_serial/PolicyAttachment/BUG27231'  -timeout 180m
=== RUN   TestAccOrganizations_serial
=== RUN   TestAccOrganizations_serial/PolicyAttachment
=== RUN   TestAccOrganizations_serial/PolicyAttachment/BUG27231
--- PASS: TestAccOrganizations_serial (20.04s)
    --- PASS: TestAccOrganizations_serial/PolicyAttachment (20.04s)
        --- PASS: TestAccOrganizations_serial/PolicyAttachment/BUG27231 (20.04s)
PASS
ok      github.com/hashicorp/terraform-provider-aws/internal/service/organizations      23.785s
...

[github-actions]

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[ewbankkit]

LGTM 🚀.

% make testacc TESTARGS='-run=TestAccOrganizations_serial/PolicyAttachment' PKG=organizations
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go test ./internal/service/organizations/... -v -count 1 -parallel 20  -run=TestAccOrganizations_serial/PolicyAttachment -timeout 180m
=== RUN   TestAccOrganizations_serial
=== RUN   TestAccOrganizations_serial/PolicyAttachment
=== RUN   TestAccOrganizations_serial/PolicyAttachment/Account
=== RUN   TestAccOrganizations_serial/PolicyAttachment/OrganizationalUnit
=== RUN   TestAccOrganizations_serial/PolicyAttachment/Root
=== RUN   TestAccOrganizations_serial/PolicyAttachment/disappears
--- PASS: TestAccOrganizations_serial (118.16s)
    --- PASS: TestAccOrganizations_serial/PolicyAttachment (118.16s)
        --- PASS: TestAccOrganizations_serial/PolicyAttachment/Account (43.35s)
        --- PASS: TestAccOrganizations_serial/PolicyAttachment/OrganizationalUnit (25.61s)
        --- PASS: TestAccOrganizations_serial/PolicyAttachment/Root (26.91s)
        --- PASS: TestAccOrganizations_serial/PolicyAttachment/disappears (22.29s)
PASS
ok  	github.com/hashicorp/terraform-provider-aws/internal/service/organizations	122.252s

[ewbankkit]

@dkujawski Thanks for the contribution 🎉 👏.

[github-actions]

This functionality has been released in v4.35.0 of the Terraform AWS Provider. Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading.

For further feature requests or bug reports with this functionality, please create a new GitHub issue following the template. Thank you!

[github-actions]

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