Chore: Rename render method on classes which aren't actually react class components (#113808)

* rename canvas class method so it's not falsely marked as a react class component

* also rename scene method

* rename render method in OptionsPaneCategoryDescriptor and OptionsPaneItemDescriptor

* rename render to setup in test scenario class

packages/grafana-ui/src/components/RadialGauge/RadialColorDefs.tsx

@@ -15,7 +15,6 @@ export interface RadialColorDefsOptions {
   displayProcessor: DisplayProcessor;
 }
 
-// eslint-disable-next-line react-prefer-function-component/react-prefer-function-component
 export class RadialColorDefs {
   private colorToIds: Record<string, string> = {};
   private defs: React.ReactNode[] = [];