fix(core): disable retries for code assist oauth and server requests

Fixes #20557

packages/core/src/code_assist/oauth2.ts

@@ -138,6 +138,7 @@ async function initOauthClient(
     clientSecret: OAUTH_CLIENT_SECRET,
     transporterOptions: {
       proxy: config.getProxy(),
+      retry: false,
     },
   });
   const useEncryptedStorage = getUseEncryptedStorageFlag();

packages/core/src/code_assist/server.ts

@@ -305,6 +305,7 @@ export class CodeAssistServer implements ContentGenerator {
       responseType: 'json',
       body: JSON.stringify(req),
       signal,
+      retry: false,
     });
     return res.data;
   }