Fix: optimize workflow context to avoid conflict error

[FogDong]

Signed-off-by: FogDong dongtianxin.tx@alibaba-inc.com

Description of your changes

Fixes #

I have:

• Read and followed KubeVela's contribution process.
• Related Docs updated properly. In a new feature or configuration option, an update to the documentation is necessary.
• Run make reviewable to ensure this PR is ready for review.
• Added backport release-x.y labels to auto-backport this PR if necessary.

How has this code been tested

Special notes for your reviewer

[codecov]

Codecov Report

Base: 68.55% // Head: 68.46% // Decreases project coverage by -0.08% ⚠️

Coverage data is based on head (3f208ed) compared to base (911095d).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #111      +/-   ##
==========================================
- Coverage   68.55%   68.46%   -0.09%     
==========================================
  Files          49       49              
  Lines        4245     4249       +4     
==========================================
- Hits         2910     2909       -1     
- Misses        978      981       +3     
- Partials      357      359       +2     

Flag	Coverage Δ
e2etests	25.75% <57.14%> (-0.11%)	⬇️
unit-test	65.35% <100.00%> (-0.04%)	⬇️

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

Impacted Files	Coverage Δ
pkg/context/context.go	74.83% <100.00%> (-0.68%)	⬇️
controllers/workflowrun_controller.go	78.03% <0.00%> (-2.28%)	⬇️
pkg/executor/workflow.go	80.35% <0.00%> (ø)

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