fix: address bug fixes for OKTA_CLIENT_USE_PKCE doc test and missing extractRoleMappingFields mock

Co-authored-by: Yassin Kortam <yassin@berri.ai>

tests/documentation_tests/test_env_keys.py

@@ -123,6 +123,7 @@ PENDING_DOCS_PR_VARS: set = {
     "OKTA_AUTHORIZATION_ENDPOINT",
     "OKTA_TOKEN_ENDPOINT",
     "OKTA_USERINFO_ENDPOINT",
+    "OKTA_CLIENT_USE_PKCE",
 }
 
 # Compare and find undocumented keys

ui/litellm-dashboard/src/components/Settings/AdminSettings/SSOSettings/Modals/EditSSOSettingsModal.test.tsx

@@ -202,6 +202,7 @@ vi.mock("../utils", () => ({
     return null;
   }),
   processSSOSettingsPayload: vi.fn(),
+  extractRoleMappingFields: vi.fn(() => ({})),
 }));
 
 // Test helpers