test(extension): add setValues to the api-configuration spec provider mocks

API.setConfiguration now routes through ClineProvider.setValues
(8576b18 "fix(api): route setConfiguration through
ClineProvider.setValues"), but the pre-existing spec still shaped the
provider mock around the old contextProxy.setValues call. Both tests in
this file failed with "this.sidebarProvider.setValues is not a
function" on the platform-unit-test runs (F3 #1560 windows unit,
job 101863508169, run 34161293841). Add the provider-level setValues
mock to both tests to match the new routing.

Upstream: #1560 (vps2 F3)

Author: easonliang28

src/extension/__tests__/api-configuration.spec.ts

@@ -17,6 +17,7 @@ describe("API - configuration", () => {
 		const provider = {
 			context: {},
 			on: vi.fn(),
+			setValues,
 			contextProxy: { setValues },
 			providerSettingsManager: { saveConfig, setModeConfig },
 			postStateToWebview,
@@ -50,6 +51,7 @@ describe("API - configuration", () => {
 		const provider = {
 			context: {},
 			on: vi.fn(),
+			setValues,
 			contextProxy: { setValues },
 			providerSettingsManager: { saveConfig, setModeConfig },
 			postStateToWebview,