fix: Don't fail on Function message names (#1119)

I tried other resolved words from
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects#fundamental_objects
and nothing seems to break.

Fixes #1110

integration/test-1110/parameters.txt

@@ -0,0 +1 @@
+useExactTypes=false

integration/test-1110/test-1110-test.ts

@@ -0,0 +1,8 @@
+import { UserRule } from "./test-1110";
+
+describe("test-1110", () => {
+  it("Able to create a partial user rule with reserved word messages", () => {
+    const simple: UserRule = UserRule.fromPartial({ UUID: "foo" });
+    expect(simple).toBeTruthy();
+  });
+});

integration/test-1110/test-1110.proto

@@ -0,0 +1,29 @@
+syntax = "proto3";
+
+message UserRule {
+    // just some fake rule for testing
+    string UUID = 1 [json_name = "uuid"];
+}
+
+message Object {
+    string namespace = 1;
+    string name = 2;
+}
+
+message Boolean {
+    string namespace = 1;
+    string name = 2;
+}
+
+message Symbol {
+    string namespace = 1;
+    string name = 2;
+}
+
+message Function {
+    string namespace = 1;
+    string name = 2;
+}
+
+service APIService {
+}