Remove httpheaders.port field from google_cloud_run_v2_worker_pool

[yanweiguo]

Summary

• Remove the deprecated http_get.http_headers.port field from the Cloud Run v2 Worker Pool resource definition.
• Mark http_get.http_headers.name field required
• Update the 8.0.0 upgrade guide to document the removal for google_cloud_run_v2_worker_pool.

cloudrunv2: removed `http_get.http_headers.port` field from container startup probe and liveness probe in `google_cloud_run_v2_worker_pool` resource

cloudrunv2: marked `http_get.http_headers.name` field of container startup probe and liveness probe in `google_cloud_run_v2_worker_pool` resource as required

[github-actions]

Googlers: For automatic test runs see go/terraform-auto-test-runs.

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[modular-magician]

Hi there, I'm the Modular magician. I've detected the following information about your changes for commit eeab7b3:

Diff report

Your PR generated the following diffs in downstream repositories:

Repository	Diff Link	Changes
google provider	View Diff	4 files changed, 13 insertions(+), 88 deletions(-)
google-beta provider	View Diff	4 files changed, 13 insertions(+), 88 deletions(-)
terraform-google-conversion	View Diff	1 file changed, 22 deletions(-)

Breaking Change(s) Detected

The following breaking change(s) were detected within your pull request.

• Field template.containers.liveness_probe.http_get.http_headers.name changed from optional to required on google_cloud_run_v2_worker_pool - reference
• Field template.containers.liveness_probe.http_get.http_headers.port within resource google_cloud_run_v2_worker_pool was either removed or renamed - reference
• Field template.containers.startup_probe.http_get.http_headers.name changed from optional to required on google_cloud_run_v2_worker_pool - reference
• Field template.containers.startup_probe.http_get.http_headers.port within resource google_cloud_run_v2_worker_pool was either removed or renamed - reference

If you believe this detection to be incorrect please raise the concern with your reviewer.
If you intend to make this change you will need to wait for a major release window.
An override-breaking-change label can be added to allow merging.

Test report

Analytics

Total Tests	Passed	Skipped	Affected
90	81	9	0

Affected Service Packages

• cloudrunv2

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[github-actions]

@BBBmau This PR has been waiting for review for 3 weekdays. Please take a look! Use the label disable-review-reminders to disable these notifications.