feat: update Compute v1 API to version 2026-09-01 (#18523)

fix: all AggregatedList RPCs return_partial_success fields removed

fix: all AggregatedList RPCs behavior is now return_partial_success=true

fix: remove several enums and fields that no longer exist in the API

docs: see https://docs.cloud.google.com/compute/docs/release-notes

Author: noahdietz

packages/google-cloud-compute/CHANGELOG.md

@@ -803,3 +803,4 @@
 ### Features
 
 * generate v1 ([53f9a3d](https://www.github.com/googleapis/python-compute/commit/53f9a3d6f14ef45b5bc3e38a48e3fa17059591eb))
+