Allow AB users with an overriden customization to go back to the default customization

Author: spfink

packages/core/src/codewhisperer/util/customizationUtil.ts

@@ -113,7 +113,7 @@ export const getSelectedCustomization = (): Customization => {
     )
     const selectedCustomization = selectedCustomizationArr[AuthUtil.instance.conn.label]
 
-    if (selectedCustomization && selectedCustomization.name !== baseCustomization.name) {
+    if (selectedCustomization && selectedCustomization.name !== '') {
         return selectedCustomization
     } else {
         const customizationFeature = FeatureConfigProvider.getFeature(Features.customizationArnOverride)

packages/core/src/test/amazonq/customizationUtil.test.ts

@@ -85,7 +85,10 @@ describe('CodeWhisperer-customizationUtils', function () {
     it('Returns AB customization', async function () {
         sinon.stub(AuthUtil.instance, 'isValidEnterpriseSsoInUse').returns(true)
 
-        await setSelectedCustomization(baseCustomization)
+        await setSelectedCustomization({
+            arn: '',
+            name: '',
+        })
 
         const returnedCustomization = getSelectedCustomization()