Show newer available tool version badge in tool form and empty-parameter state more clearly

[itisAliRH]

This PR makes two potentially ambiguous tool-form states explicit:

• When an older tool version is active, shows a Newer version available warning badge beside the version. The badge includes a tooltip and navigates to the same tool with version=latest when clicked.
• When a tool has no input parameters, shows an informational alert so the empty Tool Parameters section is not mistaken for a loading or rendering failure.

The version badge remains hidden when the latest version is active or when the tool has only one version.

Newer version available

No input parameters

How to test the changes?

• I've included appropriate automated tests.
• This is a refactoring of components with existing test coverage.
• Instructions for manual testing are as follows:
  1. Open a tool with multiple versions and select an older version.
  2. Confirm the header shows the Newer version available badge.
  3. Hover over or focus the badge and confirm the tooltip explains that it switches to the latest version.
  4. Click the badge and confirm navigation keeps the same tool_id and uses version=latest.
  5. Confirm the badge is absent when the latest version is active.
  6. Open a tool without input parameters, such as /?tool_id=interactive_tool_loom&version=latest.
  7. Confirm the Tool Parameters section shows: This tool requires no input parameters and can be run as is.

License

• I agree to license these and all my past contributions to the core Galaxy codebase under the MIT license.

[mvdbeek]

Don't we want a badge that says that we do have a newer version when opening an older tool ?
If you're already using the latest version it seems like a distraction ?

[itisAliRH]

Don't we want a badge that says that we do have a newer version when opening an older tool ? If you're already using the latest version it seems like a distraction ?

@mvdbeek Good point. I agree that the actionable state is when an older version is selected. I inverted the behavior so that a "Newer version available" badge is shown only when a newer selectable version exists, while the latest and single-version tools remain quiet.

[mvdbeek]

Approach looks good, happy to merge when it's green.