Pass whole extensions rather than just context files (#10910)

Co-authored-by: Jake Macdonald <jakemac@google.com>

packages/cli/src/ui/commands/memoryCommand.test.ts

@@ -176,7 +176,7 @@ describe('memoryCommand', () => {
         getWorkingDir: () => '/test/dir',
         getDebugMode: () => false,
         getFileService: () => ({}) as FileDiscoveryService,
-        getExtensionContextFilePaths: () => [],
+        getExtensions: () => [],
         shouldLoadMemoryFromIncludeDirectories: () => false,
         getWorkspaceContext: () => ({
           getDirectories: () => [],