fix: richTextField supports beforeInput/afterInput, but these were missing from types.ts (#12889)

Add `afterInput` and `beforeInput` to `admin.components` of
RichTextField type. These props are supported but missing from types.

Author: ThijsAtFreave

packages/payload/src/fields/config/types.ts

@@ -1268,6 +1268,8 @@ export type RichTextField<
 >={
 admin?: {
 components?: {
+afterInput?: CustomComponent[]
+beforeInput?: CustomComponent[]
 Error?: CustomComponent
 Label?: CustomComponent
 }&Admin['components']