feat: Improve applications table update

[callmevladik]

Pull Request Template

Description

• Improve applications table update logic
• Add user-friendly helper text indicating that there is a need to produce at least one pipeline run to see any image tags available

Fixes #443

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce.

Checklist:

• I have performed a self-review of my own code
• 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 added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Pull Request contain one commit. I squash my commits.

Screenshots (if appropriate):

Additional context

Add any other context or screenshots about the feature request here.