feat: allow disabling Hover Inspector in Dashboard

[jstarpl]

• What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)

Feature

• What is the current behavior? (You can also link to an open issue here)

The Hover Inspector is always shown

• What is the new behavior (if this is a feature change)?

It's possible to disable the Hover Inspector in the Dashboard on a per-panel basis.

• Other information:

Status

• [ ] Code documentation for the relevant parts in the code have been added/updated by the PR author
• [ ] The functionality has been tested by the PR author
• [ ] The functionality has been tested by NRK