SD-781: Telefonistka wrongly reports "Error" when deploying from a PR branch with auto-sync on

[yzdann]

Description

1. User opens a pr
2. They set the application’s object source to pr branch for an application with autosync enabled
3. They push another commit

Outcome:
They see an a failed 🔴 telefonistka run with an error like the following:

⚠️ ⚠️ Error getting diff from ArgoCD …

App <x> already has revision <branch> as Source Target Revision and autosync is on, skipping diff calculation

Instead we want to replace the Failing status with Passing status, the Error message with Info message, and avoid showing the Set ArgoCD apps Target Rervision to…

Type of Change

• Bug Fix
• New Feature
• Breaking Change
• Refactor
• Documentation
• Other (please describe)

Checklist

• I have read the contributing guidelines
• Existing issues have been referenced (where applicable)
• I have verified this change is not present in other open pull requests
• Functionality is documented
• All code style checks pass
• New code contribution is covered by automated tests
• All new and existing tests pass