test(e2e): migrate e2e_2_pxes and e2e_lending_contract to FAST_E2E_SETUP_OPTS

Both already used PIPELINING_SETUP_OPTS. The plan flagged them as second-batch
out of caution; verified neither has hand-rolled cc.eth.warp/dateProvider.setTime
helpers that would conflict with the wave-1 cheat-code audit.

Author: spalladino

yarn-project/aztec/src/testing/checkpoint_auto_prover.test.ts

@@ -134,10 +134,11 @@ describe('CheckpointAutoProver', () => {
 
     // The archiver tip advances to 3 immediately, so each checkpoint's wait resolves right away.
     getL2Tips.mockResolvedValue(makeTips(3));
-    markAsProven.mockImplementation(async (n?: CheckpointNumber) => {
+    markAsProven.mockImplementation((n?: CheckpointNumber) => {
       if (n !== undefined) {
         promotedAt.push(n);
       }
+      return Promise.resolve();
     });
 
     prover.start();

yarn-project/end-to-end/src/e2e_2_pxes.test.ts

@@ -9,7 +9,7 @@ import { ChildContract } from '@aztec/noir-test-contracts.js/Child';
 
 import { expect, jest } from '@jest/globals';
 
-import { PIPELINING_SETUP_OPTS } from './fixtures/fixtures.js';
+import { FAST_E2E_SETUP_OPTS } from './fixtures/fixtures.js';
 import { deployToken, expectTokenBalance, mintTokensToPrivate } from './fixtures/token_utils.js';
 import { setup, setupPXEAndGetWallet } from './fixtures/utils.js';
 import { TestWallet } from './test-wallet/test_wallet.js';
@@ -53,7 +53,7 @@ describe('e2e_2_pxes', () => {
       accounts: [accountAAddress],
       logger,
       teardown: teardownA,
-    } = await setup(1, { ...PIPELINING_SETUP_OPTS, numberOfInitialFundedAccounts: 3 }));
+    } = await setup(1, { ...FAST_E2E_SETUP_OPTS, numberOfInitialFundedAccounts: 3 }));
 
     ({
       wallet: walletB,

yarn-project/end-to-end/src/e2e_lending_contract.test.ts

@@ -12,7 +12,7 @@ import { TokenContract } from '@aztec/noir-contracts.js/Token';
 
 import { afterAll, jest } from '@jest/globals';
 
-import { PIPELINING_SETUP_OPTS } from './fixtures/fixtures.js';
+import { FAST_E2E_SETUP_OPTS } from './fixtures/fixtures.js';
 import type { EndToEndContext } from './fixtures/setup.js';
 import { mintTokensToPrivate } from './fixtures/token_utils.js';
 import { ensureAccountContractsPublished, setup } from './fixtures/utils.js';
@@ -81,7 +81,7 @@ describe('e2e_lending_contract', () => {
   };
 
   beforeAll(async () => {
-    const ctx = await setup(1, { ...PIPELINING_SETUP_OPTS });
+    const ctx = await setup(1, { ...FAST_E2E_SETUP_OPTS });
     ({
       teardown,
       logger,