fix spam notifications on deleted files

[hjetmundsen]

Pull Request

Description

Buffers containing files that were deleted externally are spammed with notifications that the file has been modified. These changes make it so that these buffers get a single warning notification that the file has been deleted.

Type of Change

Please check the options that are relevant:

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Code refactoring
• Performance improvement
• Other (please describe):

Checklist

Please check all that apply:

• I have read the CONTRIBUTING document
• My code follows the style guidelines of this project
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have tested with the actual Rovo Dev CLI tool
• I have tested in different environments (if applicable)

Screenshots (if applicable)

Before

After

Additional Notes

Add any other context about the PR here.