fix(gdu): remove temp exclusion and add sourceType unambiguous to babel config

Remove the temporary @autoguru/utilities exclusion that was no longer needed
and add sourceType 'unambiguous' to babel-loader options to handle both ES
modules and CommonJS files correctly.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: robmcleishag

.changeset/tangy-rivers-care.md

@@ -0,0 +1,5 @@
+---
+"gdu": patch
+---
+
+Remove temporary @autoguru/utilities exclusion and add sourceType 'unambiguous' to babel-loader config

packages/gdu/config/webpack/webpack.config.ts

@@ -344,11 +344,6 @@ export const baseOptions = ({
 						{
 							include: ourCodePaths,
 							exclude(path) {
-								// TODO: Temp, remove this
-								if (path.includes('@autoguru/utilities')) {
-									return true;
-								}
-
 								const ourCode = ourCodePaths.some((item) => {
 									if (item instanceof RegExp) {
 										return item.test(path);
@@ -369,6 +364,7 @@ export const baseOptions = ({
 										cacheDirectory: true,
 										babelrc: false,
 										envName: 'production',
+										sourceType: 'unambiguous',
 										...hooks.babelConfig.call(
 											require('../babel-config/production')(
 												getGuruConfig(),
@@ -390,6 +386,7 @@ export const baseOptions = ({
 										cacheDirectory: true,
 										babelrc: false,
 										envName: 'production',
+										sourceType: 'unambiguous',
 										presets: [
 											[
 												require.resolve(

packages/gdu/config/webpack/webpack.development.config.ts

@@ -257,11 +257,6 @@ export const baseDevelopmentOptions = ({
 						{
 							include: ourCodePaths,
 							exclude(path) {
-								// TODO: Temp, remove this
-								if (path.includes('@autoguru/utilities')) {
-									return true;
-								}
-
 								const ourCode = ourCodePaths.some((item) => {
 									if (item instanceof RegExp) {
 										return item.test(path);
@@ -282,6 +277,7 @@ export const baseDevelopmentOptions = ({
 										cacheDirectory: true,
 										babelrc: false,
 										envName: 'development',
+										sourceType: 'unambiguous',
 										...hooks.babelConfig.call(
 											require('../babel-config/development')(
 												getGuruConfig(),
@@ -303,6 +299,7 @@ export const baseDevelopmentOptions = ({
 										cacheDirectory: true,
 										babelrc: false,
 										envName: 'development',
+										sourceType: 'unambiguous',
 										presets: [
 											[
 												require.resolve(