Fix references in unit tests

Author: opieter-aws

packages/amazonq/test/unit/codewhisperer/service/recommendationHandler.test.ts

@@ -47,7 +47,7 @@ describe('recommendationHandler', function () {
             mockClient.listRecommendations.resolves({})
             mockClient.generateRecommendations.resolves({})
             RecommendationHandler.instance.clearRecommendations()
-            sinon.stub(AuthUtil.instance, 'startUrl').value(testStartUrl)
+            sinon.stub(AuthUtil.instance.connection!, 'startUrl').value(testStartUrl)
         })
 
         afterEach(function () {

packages/amazonq/test/unit/codewhisperer/tracker/codewhispererTracker.test.ts

@@ -83,7 +83,7 @@ describe('codewhispererTracker', function () {
     describe('emitTelemetryOnSuggestion', function () {
         it('Should call recordCodewhispererUserModification with suggestion event', async function () {
             const testStartUrl = 'testStartUrl'
-            sinon.stub(AuthUtil.instance.connection, 'startUrl').value(testStartUrl)
+            sinon.stub(AuthUtil.instance.connection!, 'startUrl').value(testStartUrl)
             const suggestion = createAcceptedSuggestionEntry()
             const assertTelemetry = assertTelemetryCurried('codewhisperer_userModification')
             await CodeWhispererTracker.getTracker().emitTelemetryOnSuggestion(suggestion)