Bump vscode-tas-client and fix tests (microsoft#22493)

Closes microsoft#22461

Sinon requires the actual object definition, so we need to point it to
the module file that actually has the function.

Author: karthiknadig

package-lock.json

@@ -1588,7 +1588,7 @@
         "vscode-jsonrpc": "^8.2.0",
         "vscode-languageclient": "^9.0.1",
         "vscode-languageserver-protocol": "^3.17.5",
-        "vscode-tas-client": "^0.1.63",
+        "vscode-tas-client": "^0.1.75",
         "which": "^2.0.2",
         "winreg": "^1.2.4",
         "xml2js": "^0.5.0"

package.json

@@ -8,7 +8,9 @@ import { assert } from 'chai';
 import * as sinon from 'sinon';
 import { anything, instance, mock, when } from 'ts-mockito';
 import { Disposable } from 'vscode-jsonrpc';
-import * as tasClient from 'vscode-tas-client';
+// sinon can not create a stub if we just point to the exported module
+import * as tasClient from 'vscode-tas-client/vscode-tas-client/VSCodeTasClient';
+import * as expService from 'vscode-tas-client';
 import { ApplicationEnvironment } from '../../../client/common/application/applicationEnvironment';
 import { IApplicationEnvironment, IWorkspaceService } from '../../../client/common/application/types';
 import { WorkspaceService } from '../../../client/common/application/workspace';
@@ -180,7 +182,7 @@ suite('Experimentation service', () => {
             getTreatmentVariable = sinon.stub().returns(true);
             sinon.stub(tasClient, 'getExperimentationService').returns(({
                 getTreatmentVariable,
-            } as unknown) as tasClient.IExperimentationService);
+            } as unknown) as expService.IExperimentationService);
 
             configureApplicationEnvironment('stable', extensionVersion);
         });
@@ -218,7 +220,7 @@ suite('Experimentation service', () => {
             getTreatmentVariable = sinon.stub().returns(false);
             sinon.stub(tasClient, 'getExperimentationService').returns(({
                 getTreatmentVariable,
-            } as unknown) as tasClient.IExperimentationService);
+            } as unknown) as expService.IExperimentationService);
 
             configureApplicationEnvironment('stable', extensionVersion);
 
@@ -364,7 +366,7 @@ suite('Experimentation service', () => {
             getTreatmentVariableStub = sinon.stub().returns(Promise.resolve('value'));
             sinon.stub(tasClient, 'getExperimentationService').returns(({
                 getTreatmentVariable: getTreatmentVariableStub,
-            } as unknown) as tasClient.IExperimentationService);
+            } as unknown) as expService.IExperimentationService);
 
             configureApplicationEnvironment('stable', extensionVersion);
         });