fix(tax): Make system provider registration backward compatible (#12441)

* fix(tax): Make provider registration backward compatible

* add tests

packages/modules/tax/integration-tests/__tests__/local-providers.spec.ts

@@ -0,0 +1,28 @@
+import { ITaxModuleService } from "@medusajs/framework/types"
+
+import { Modules } from "@medusajs/framework/utils"
+import { moduleIntegrationTestRunner } from "@medusajs/test-utils"
+
+jest.setTimeout(30000)
+
+moduleIntegrationTestRunner<ITaxModuleService>({
+  moduleName: Modules.TAX,
+  testSuite: ({ service }) => {
+    describe("Tax Module Service", () => {
+      describe("providers", () => {
+        it("should have loaded local tax provider successfully", async () => {
+          const providers = await service.listTaxProviders()
+
+          expect(providers).toEqual(
+            expect.arrayContaining([
+              expect.objectContaining({
+                id: "tp_system",
+                is_enabled: true,
+              }),
+            ])
+          )
+        })
+      })
+    })
+  },
+})

packages/modules/tax/integration-tests/utils/setup-tax-structure.ts

@@ -27,17 +27,17 @@ export const setupTaxStructure = async (service: ITaxModuleService) => {
   const [us, dk, de, ca] = await service.createTaxRegions([
     {
       country_code: "US",
-      provider_id: "tp_system_system",
+      provider_id: "tp_system",
       default_tax_rate: { name: "US Default Rate", rate: 2, code: "US" },
     },
     {
       country_code: "DK",
-      provider_id: "tp_system_system",
+      provider_id: "tp_system",
       default_tax_rate: { name: "Denmark Default Rate", rate: 25, code: "DK" },
     },
     {
       country_code: "DE",
-      provider_id: "tp_system_system",
+      provider_id: "tp_system",
       default_tax_rate: {
         code: "DE19",
         name: "Germany Default Rate",
@@ -46,7 +46,7 @@ export const setupTaxStructure = async (service: ITaxModuleService) => {
     },
     {
       country_code: "CA",
-      provider_id: "tp_system_system",
+      provider_id: "tp_system",
       default_tax_rate: { name: "Canada Default Rate", rate: 5, code: "CA" },
     },
   ])