EDM-3097: Disabled import option has a tooltip

[celdrake]

Added an explanation tooltip when the "Use an existing Git repository" option cannot be selected.

Summary by CodeRabbit

• New Features

  • Added tooltip that displays when no Git repositories are available for selection

• Style

  • Updated checkbox component styling for improved visual alignment and consistency

[coderabbitai]

Walkthrough

Added a new translation entry for "No Git repositories found" and integrated it into the ImportFleetWizard RepositoryStep via a tooltip. Additionally, applied CSS styling updates to the CreateRepositoryForm checkbox component.

Changes

Cohort / File(s)	Summary
Internationalization libs/i18n/locales/en/translation.json	Added translation entry "No Git repositories found" for UI text display.
ImportFleetWizard libs/ui-components/src/components/Fleet/ImportFleetWizard/steps/RepositoryStep.tsx	Imported WithTooltip and wrapped "Use an existing Git repository" radio button with tooltip displaying "No Git repositories found" when no repositories exist.
CreateRepository Styling libs/ui-components/src/components/Repository/CreateRepository/CreateRepositoryForm.css, libs/ui-components/src/components/Repository/CreateRepository/CreateRepositoryForm.tsx	Added new .fctl-create-repo__rs-checkbox CSS class with custom property for vertical alignment; applied className to Checkbox component for "Use resource syncs" option.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~15 minutes

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main change: adding a tooltip to a disabled import option, which is reflected in all modified files.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

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[celdrake]

The checkbox was misaligned with the label.
Using CheckboxField or other solutions didn't work.