@Override
	protected boolean checkEditorValueValidity() {
		return true;
	}
Editor for constraints that don't have a value that needs editing.  The "IsEmpty" constraint
is an example of a constraint that doesn't need an editor.

@param <T> the column type.
Ghidra/Framework/Docking/src/main/java/docking/widgets/table/constrainteditor/DoNothingColumnConstraintEditor.java