fix: use orange header for manual execution notifications

[huanghongbo-hhb]

Summary

• Use an orange Feishu card header for manual-execution pending notifications instead of red.

Why

• Manual execution pending is a waiting state rather than a failure state, so the red header is misleading.

Main Changes

• Add an orange Feishu header template.
• Map workflow status to the orange header template in common Feishu notification rendering.
• Reuse the existing main-branch manual execution notification flow without changing workflow behavior.

Risk / Compatibility

• Low risk: this only changes the Feishu notification header color for paused/manual-execution-waiting workflow states.
• No API, persistence, or workflow execution behavior changes.

Test

• Verified with ? github.com/koderover/zadig/v2/pkg/microservice/aslan/core/common/service/instantmessage [no test files]
• Result: package builds successfully and currently has no test files on this branch.

Contact

• Contact: huanghongbo@koderover.com

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This change is