chore(orchestration): prevent throwing on already defined workflow (#5337)

**What**
At the moment, when importing something from medusa entry point, if two medusa packages are installed because of a plugin, the evaluation of the import can end up throwing that a workflow is already defined. To prevent that from happening, we can just not throw if it is already defined and just return prematurely and make it idempotent.

packages/utils/src/common/__tests__/deep-equal-obj.spec.ts

@@ -0,0 +1,33 @@
+import { deepEqualObj } from "../deep-equal-obj"
+
+describe("deepEqualObj", function () {
+  it("should return true if objects are equal", function () {
+    const object1 = {
+      foo: "bar",
+      bar: "foo",
+      xar: { foo: "bar", wor: { bar: "foo", ror: ["test", "test1"] } },
+    }
+    const object2 = {
+      foo: "bar",
+      bar: "foo",
+      xar: { foo: "bar", wor: { bar: "foo", ror: ["test", "test1"] } },
+    }
+
+    expect(deepEqualObj(object1, object2)).toBe(true)
+  })
+
+  it("should return false if objects are not equal", function () {
+    const object1 = {
+      foo: "bar",
+      bar: "foo",
+      xar: { foo: "bar", wor: { bar: "foo", ror: ["test", "test1"] } },
+    }
+    const object2 = {
+      foo: "bar",
+      bar: "foo",
+      xar: { foo: "bar", wor: { bar: "foo", ror: ["test", "test1_"] } },
+    }
+
+    expect(deepEqualObj(object1, object2)).toBe(false)
+  })
+})