fix: context cancel not working during node runner execution

[zhuangjie1125]

en: node is running and canceling the run does not take effect
zh(optional): node 节点运行过程中，ctx cancle 取消不生效问题

[codecov-commenter]

Codecov Report

❌ Patch coverage is 64.00000% with 27 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
...nd/domain/workflow/internal/compose/node_runner.go	48.93%	24 Missing ⚠️
backend/pkg/execute/execute.go	80.00%	2 Missing and 1 partial ⚠️

Files with missing lines	Coverage Δ
.../domain/workflow/internal/execute/collect_token.go	82.79% <100.00%> (+1.84%)	⬆️
backend/pkg/execute/execute.go	80.00% <80.00%> (ø)
...nd/domain/workflow/internal/compose/node_runner.go	59.22% <48.93%> (+0.62%)	⬆️

... and 12 files with indirect coverage changes

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