chore(utils): Move generic utils from region module to utils (#6466)

Moves some generic utilities from the region module to the top-level utils package

packages/utils/src/common/__tests__/remove-undefined.spec.ts

@@ -0,0 +1,22 @@
+import { removeUndefined } from "../remove-undefined"
+
+describe("removeUndefined", function () {
+  it("should remove all undefined fields from an object", function () {
+    const withUndefined = {
+      foo: undefined,
+      bar: "baz",
+      foo2: null,
+    }
+    expect(withUndefined.hasOwnProperty("foo")).toBe(true)
+
+    const output = removeUndefined(withUndefined)
+    expect(output.hasOwnProperty("foo")).toBe(false)
+    expect(output.hasOwnProperty("bar")).toBe(true)
+    expect(output.hasOwnProperty("foo2")).toBe(true)
+  })
+
+  it("should return an empty object as-is", function () {
+    const output = removeUndefined({})
+    expect(output).toEqual({})
+  })
+})