fix: Add backgroundColor type on CoreScaleOptions (#11348)

* Fix: add backgroundColor type on CartesianScaleOptions

* Add instead on CoreScaleOptions

* Remove redundant backgroundColor from RadialLinearScaleOptions

Author: Mer-cat

src/types/index.d.ts

@@ -1166,6 +1166,10 @@ export interface CoreScaleOptions {
    * Align pixel values to device pixels
    */
   alignToPixels: boolean;
+  /**
+   * Background color of the scale area.
+   */
+  backgroundColor: Color;
   /**
    * Reverse the scale.
    * @default false
@@ -3464,8 +3468,6 @@ export type RadialTickOptions = TickOptions & {
 }
 
 export type RadialLinearScaleOptions = CoreScaleOptions & {
-  backgroundColor: Color;
-
   animate: boolean;
 
   startAngle: number;