fix(evm-wallet-experiment): docker e2e ALLOWED_HOSTS must be hostnames only

After PR #942 (Snaps network endowment factory) introduced the
`network-caveat.ts` matcher with strict "hostname-only, no port" semantics
(see packages/ocap-kernel/src/vats/network-caveat.ts:17-20), the e2e
allowlist entries `['evm:8545', 'bundler:4337']` never match
`URL.hostname` (which is just `'evm'` / `'bundler'`). Every fetch out of
the provider vat was rejected with "Invalid host: evm", causing every
docker e2e test to fail at `createSmartAccount`.

Drop the ports to match the caveat's contract.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: sirtimid

packages/evm-wallet-experiment/test/e2e/docker/helpers/scenarios.ts

@@ -32,7 +32,10 @@ const TEST_MNEMONIC =
 const CHAIN_ID = 31337;
 const EVM_RPC_URL = 'http://evm:8545';
 const BUNDLER_URL = 'http://bundler:4337';
-const ALLOWED_HOSTS = ['evm:8545', 'bundler:4337'];
+// Hostnames only — the kernel's network caveat (packages/ocap-kernel
+// /src/vats/network-caveat.ts) matches `URL.hostname`, which never
+// includes a port.
+const ALLOWED_HOSTS = ['evm', 'bundler'];
 
 export type HomeResult = {
   kref: string;