`deno test`: beforeEach() prevents use of permissions configuration

This may or may not be intended behaviour. However I think at least the behaviour/error message is unintuitive, because it is not necessarily obvious as a user that `beforeEach` is in the nested hierarchy.

When creating a test like this:

```typescript

beforeEach(() => {
console.log('this acts as an outer nested scope called "global"')
console.log('but there is no way to assign permissions on this outer nested layer')
});

const permissions = {
run: true,
write: true,
};

describe("example",{ permissions }, () => {
it("should do some foo", async () => {
// Error: permissions option not available for nested tests
});
});
```

Start by reproducing the TypeScript example with `deno test`, focusing on the interaction between the top-level `beforeEach`, nested `describe`, and its `permissions` option. Determine whether the restriction is intended and what behavior or error message would make the scope clear; the issue does not name implementation files or tests.

Written by the indexing model from the issue text.