Fix Test Notifications Ok button exception

[andromeda-224]

Prerequisites

• [ ] Reviewed the checklist

• [ ] Reviewed feedback from the "Sonar Cloud" bot. Note that you have to wait for the "CI / Unit Tests") to complete first. Failed Unit tests can be debugged by adding the label "verbose logging" to the GitHub PR.

Description of the Change

Exception fixed by returning set of non-null PluginParameters in CreateParameters(). Dark themed Show/Hide Details text fixed with stylesheet.

Alternate Designs

None.

Why Should This Be In Core?

To fix the unexpected exception on the Ok button for Test Notifications.

Benefits

To fix the unexpected exception on the Ok button for Test Notifications.

Possible Drawbacks

None.

Verification Process

1. Create a new Graph.
2. Select menu item Experimental -> Developer -> Test Notifications.

Notification dialogs pop up and no exception is displayed. All text in the dialog boxes are readable.

Applicable Issues

2139

[sonarcloud[bot]]

Quality Gate failed

Failed conditions
44.4% Coverage on New Code (required ≥ 80%)

See analysis details on SonarCloud