fix(deployment): migrate workload update calls to patch

[Nazihbenbrahim]

Ⅰ. Describe what this PR does

This PR migrates the remaining workload-related Update calls to Patch in the advanced deployment controller to improve Kubernetes version-skew safety.

When Rollouts is built against older Kubernetes API types but runs against a newer cluster, full-object Update may erase fields unknown to the old client structs. Patch only sends the changed delta and avoids overwriting unknown fields.

This PR changes:

• Replace remaining Deployment.Status().Update(...) calls with Status().Patch(...) in the advanced deployment controller
• Replace c.Update(...) with c.Patch(...) in UpdateFinalizer
• Keep existing behavior unchanged while switching the write path from full update to patch
• Add tests covering:
  • status patch path
  • empty-selector sync path
  • finalizer patch behavior and idempotence

Main code changes:

• pkg/controller/deployment/deployment_controller.go
• pkg/controller/deployment/sync.go
• pkg/util/workloads_utils.go

Tests added/updated:

• pkg/controller/deployment/status_patch_test.go
• pkg/controller/deployment/deployment_controller_test.go
• pkg/util/workloads_utils_test.go

Ⅱ. Does this pull request fix one issue?

fixes #273

Ⅲ. Special notes for reviews

Verification commands:

gofmt -w \
  pkg/controller/deployment/deployment_controller.go \
  pkg/controller/deployment/deployment_controller_test.go \
  pkg/controller/deployment/sync.go \
  pkg/controller/deployment/status_patch_test.go \
  pkg/util/workloads_utils.go \
  pkg/util/workloads_utils_test.go

go test ./pkg/controller/deployment/... -v -count=1
go test ./pkg/util/... -v -count=1

rg -n "c\.Update\(|Status\(\)\.Update\(" pkg/controller/deployment pkg/util/workloads_utils.go

[kruise-bot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by:
Once this PR has been reviewed and has the lgtm label, please assign fillzpp for approval by writing /assign @fillzpp in a comment. For more information see:The Kubernetes Code Review Process.

The full list of commands accepted by this bot can be found here.

Details

Needs approval from an approver in each of these files:

• OWNERS

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[kruise-bot]

Welcome @Nazihbenbrahim! It looks like this is your first PR to openkruise/rollouts 🎉

[codecov]

Codecov Report

❌ Patch coverage is 72.72727% with 6 lines in your changes missing coverage. Please review.
✅ Project coverage is 52.47%. Comparing base (8416512) to head (6ac351f).

Files with missing lines	Patch %	Lines
pkg/controller/deployment/sync.go	50.00%	3 Missing and 3 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #328      +/-   ##
==========================================
+ Coverage   51.38%   52.47%   +1.08%     
==========================================
  Files          66       66              
  Lines        8559     8568       +9     
==========================================
+ Hits         4398     4496      +98     
+ Misses       3575     3479      -96     
- Partials      586      593       +7     

Flag	Coverage Δ
unittests	52.47% <72.72%> (+1.08%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[Nazihbenbrahim]

@furykerry Can you please review this PR