ReferenceError: context is not defined when running ui test from `yarn create...`

```
 1780  yarn create @agoric/dapp hash-fun
 1781  cd hash-fun/
 1782  yarn
 1783  cd ui
 1784  yarn test
```

```
 FAIL  test/e2e/specs/test.spec.js [ test/e2e/specs/test.spec.js ]
ReferenceError: context is not defined
 ❯ test/e2e/specs/test.spec.js:4:3
```

offer-up is currently at: 1f75e6a