test(mfa): hydrate the session account in the ui walk harness

The session-hydration guard drops INIT while the account is still the
context default placeholder, and the walk harness never mounted
CurrentUserPersonalDetailsProvider, so every walked path failed to open
the modal. Mount the provider and seed SESSION.accountID before each
path.

Author: dariusz-biela

tests/unit/components/MultifactorAuthentication/machine/graphTraversal/viewMatchesMachine.test.tsx

@@ -7,12 +7,14 @@ import {mfaNavigationRef} from '@components/MultifactorAuthentication/mfaNavigat
 import type {MFAResult} from '@libs/MultifactorAuthentication/shared/MFAResult';
 
 import CONST from '@src/CONST';
+import ONYXKEYS from '@src/ONYXKEYS';
 import SCREENS from '@src/SCREENS';
 
 import type * as MfaRealUiMocks from 'tests/utils/mfa/realUi/mocks';
 import type {SnapshotFrom} from 'xstate';
 
 import Onyx from 'react-native-onyx';
+import {MFA_TEST_ACCOUNT_ID} from 'tests/utils/mfa/flowFixtures';
 import getWalkedPaths, {
     isAutoDrivenEvent,
     READ_HAS_ACCEPTED_SOFT_PROMPT_DONE_EVENT_TYPE,
@@ -215,11 +217,14 @@ describe('the real MFA modal matches the machine at every step of every generate
     // The navigation buffer is deliberately not reset here. The machine resets it when it enters
     // `closed`, which also runs when each test's fresh actor starts, so a reset here would hide a
     // machine that stopped doing that cleanup. Onyx is cleared because approving the soft prompt
-    // persists the acceptance, and no path may depend on what an earlier path stored.
+    // persists the acceptance, and no path may depend on what an earlier path stored. The session
+    // account is then seeded because the MFA context rejects a flow start while the account is
+    // still the hydration placeholder.
     beforeEach(async () => {
         resetMfaUiMocks();
         await act(async () => {
             await Onyx.clear();
+            await Onyx.merge(ONYXKEYS.SESSION, {accountID: MFA_TEST_ACCOUNT_ID});
         });
         await waitForBatchedUpdatesWithAct();
     });

tests/utils/mfa/realUi/harness.tsx

@@ -1,6 +1,7 @@
 import {render} from '@testing-library/react-native';
 
 import ComposeProviders from '@components/ComposeProviders';
+import {CurrentUserPersonalDetailsProvider} from '@components/CurrentUserPersonalDetailsProvider';
 import {LocaleContextProvider} from '@components/LocaleContextProvider';
 import {MultifactorAuthenticationContextProviders, useMultifactorAuthentication} from '@components/MultifactorAuthentication/Context';
 import OnyxListItemProvider from '@components/OnyxListItemProvider';
@@ -30,14 +31,17 @@ function MfaControlsCapture({controlsRef}: {controlsRef: MfaControlsRef}) {
 
 /**
  * Mounts the production MFA providers and modal navigator. The global safe-area mock provides fixed
- * values without a `SafeAreaProvider`. The returned `executeScenario` reads the captured controls at
- * call time because the provider recreates the context API on every render.
+ * values without a `SafeAreaProvider`. `CurrentUserPersonalDetailsProvider` is required because the
+ * MFA context rejects a flow start while the account is still the context default placeholder, so
+ * each test must also seed `ONYXKEYS.SESSION` with an account ID before starting a flow. The
+ * returned `executeScenario` reads the captured controls at call time because the provider recreates
+ * the context API on every render.
  */
 function renderMfaUi() {
     const controlsRef: MfaControlsRef = {current: undefined};
 
     const renderResult = render(
-        <ComposeProviders components={[OnyxListItemProvider, LocaleContextProvider]}>
+        <ComposeProviders components={[OnyxListItemProvider, CurrentUserPersonalDetailsProvider, LocaleContextProvider]}>
             <MultifactorAuthenticationContextProviders>
                 <MfaControlsCapture controlsRef={controlsRef} />
                 <MultifactorAuthenticationModalNavigator />