LINBEE-21919 - continue workflow even if branch was deleted

[yeelali14]

• Added warnings for failed fetch of the head branch if it has been deleted and ensure the action continues even if a checkout fails.

✨ PR Description

Purpose: Fix workflow to continue execution when head branch has been deleted by adding error handling to git operations.
Main changes:

• Added || echo "::warning::..." to git fetch command to log warning and continue if upstream head branch fetch fails
• Changed git checkout commands to use || true to allow workflow continuation even if branch checkout fails
• Modified git branch creation to handle deletion scenarios gracefully without blocking subsequent steps

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[orca-security-us]

Orca Security Scan Summary

Status	Check	Issues by priority
Passed	Infrastructure as Code	0   0   0   0	View in Orca
Passed	OSS Licenses	0   0   0   0	View in Orca
Passed	SAST	0   0   0   0	View in Orca
Passed	Secrets	0   0   0   0	View in Orca
Passed	Vulnerabilities	0   0   0   0	View in Orca

[gitstream-cm]

✨ PR Review

The changes appropriately implement graceful handling of deleted branches by adding error suppression with || true for git operations. However, the silent failure handling could make debugging difficult when operations fail.

1 issues detected:

🧹 Maintainability - Checkout failures are suppressed silently, reducing visibility into workflow execution issues 🛠️

Details: The checkout operations use || true to suppress failures without any logging or warning messages. This makes it difficult to debug issues when git operations fail for reasons other than deleted branches.
File: action.yml (90-92)
_{🛠️ A suggested code correction is included in the review comments.}

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[MishaKav]

💪

[Copilot]

Pull request overview

This PR adds error handling to git operations in the GitHub Action workflow to prevent failures when the head branch has been deleted. The changes ensure the workflow continues execution even when branch checkout operations fail.

Changes:

• Added warning message for failed head branch fetch operations
• Modified git checkout commands to continue on failure using || true
• Ensured workflow resilience when branches are deleted

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