fix: Postgres backup task searching

[lewislarsen]

Pull Request

Description

Using 'like' with postgres results in a pretty terrible searching experience due to it being case sensitive. This PR tweaks it for postgres connections.

In the future we should look into improving it for other connections too.

Additionally, also fixed the spacing issue when there's no results and conditionally hid the filter button like it was intended to be.

Type of Change

• Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

• Automated testing (Feature tests, Unit tests)
• Manual testing

Checklist:

• I have performed a self-review of my own code
• My changes do not introduce any new warnings or errors
• I have added tests that prove my fix is effective or that my feature works (where applicable)
• New and existing tests pass locally with my changes
• I have used translation helpers and provided translations (where applicable)
• I have run code quality tools (e.g., linters) and addressed any issues