Add deprecated label to MPU containers

Author: domlander

dotcom-rendering/src/components/DynamicSlowMPU.tsx

@@ -68,6 +68,8 @@ const Card33_Card33_Card33 = ({
  * If you pass no bigs at all the top slice will not render and a special
  * 3 column layout is used for the remaining slice.
  *
+ * @deprecated Adverts are no longer shown within containers. We no
+ * longer use containers that reserve a space for an MPU advert.
  */
 export const DynamicSlowMPU = ({
 	groupedTrails,

dotcom-rendering/src/components/FixedMediumSlowXIIMPU.tsx

@@ -129,6 +129,10 @@ const Card50_Card50 = ({
 	);
 };
 
+/**
+ * @deprecated Adverts are no longer shown within containers. We no
+ * longer use containers that reserve a space for an MPU advert.
+ */
 export const FixedMediumSlowXIIMPU = ({
 	trails,
 	containerPalette,

dotcom-rendering/src/components/FixedSmallSlowVMPU.tsx

@@ -12,6 +12,10 @@ type Props = {
 	absoluteServerTimes: boolean;
 };
 
+/**
+ * @deprecated Adverts are no longer shown within containers. We no
+ * longer use containers that reserve a space for an MPU advert.
+ */
 export const FixedSmallSlowVMPU = ({
 	trails,
 	containerPalette,