feat(dashboard,types,promotion,medusa): hide fields on promotions depending on templates (#7746)

**what:**

- hides different fields depending on the chosen template
- remove operator values API
- fixes to edit promotion rules
- make currency optional for promotion

RESOLVES CORE-2297

packages/modules/promotion/src/migrations/Migration20240617102917.ts

@@ -0,0 +1,22 @@
+import { Migration } from "@mikro-orm/migrations"
+
+export class Migration20240617102917 extends Migration {
+  async up(): Promise<void> {
+    this.addSql(
+      'alter table "promotion_application_method" alter column "currency_code" type text using ("currency_code"::text);'
+    )
+
+    this.addSql(
+      'alter table "promotion_application_method" alter column "currency_code" drop not null;'
+    )
+  }
+
+  async down(): Promise<void> {
+    this.addSql(
+      'alter table "promotion_application_method" alter column "currency_code" type text using ("currency_code"::text);'
+    )
+    this.addSql(
+      'alter table "promotion_application_method" alter column "currency_code" set not null;'
+    )
+  }
+}