fix: Standardize remaining batch methods and update FE calls (#7122)

packages/promotion/src/joiner-config.ts

@@ -1,11 +1,12 @@
 import { Modules } from "@medusajs/modules-sdk"
 import { ModuleJoinerConfig } from "@medusajs/types"
 import { generateLinkableKeysMap } from "@medusajs/utils"
-import { Campaign, Promotion } from "@models"
+import { Campaign, Promotion, PromotionRule } from "@models"
 
 export const LinkableKeys = {
   promotion_id: Promotion.name,
   campaign_id: Campaign.name,
+  promotion_rule_id: PromotionRule.name,
 }
 
 export const entityNameToLinkableKeysMap = generateLinkableKeysMap(LinkableKeys)
@@ -28,5 +29,12 @@ export const joinerConfig: ModuleJoinerConfig = {
         methodSuffix: "Campaigns",
       },
     },
+    {
+      name: ["promotion_rule", "promotion_rules"],
+      args: {
+        entity: PromotionRule.name,
+        methodSuffix: "PromotionRules",
+      },
+    },
   ],
 }