Issues when using snapshot tests with DNT: tests and builds

During type checking:

```
[dnt] Building project...
[dnt] Type checking...
src/deps/deno.land/std@0.168.0/testing/snapshot.ts:420:18 - error TS7017: Element implicitly has an 'any' type because type 'typeof globalThis' has no index signature.

420 globalThis.addEventListener("unload", this.#teardown);
~~~~~~~~~~~~~~~~

error: Uncaught Error: Had 1 diagnostics.
throw new Error(`Had ${diagnostics.length} diagnostics.`);
^
at build (https://deno.land/x/dnt@0.33.0/mod.ts:320:15)
at async file:///home/orta/dev/puzmo/redwood-codegen-api-types/scripts/buildNPM.ts:7:1
```

During testing:

```

FAILURES

uses a rn to promise when we see an async tag
Error [ERR_MODULE_NOT_FOUND]: Cannot find module '/home/orta/dev/puzmo/redwood-codegen-api-types/npm/esm/tests/__snapshots__/preferPromiseFnWhenKnown.test.js.snap' imported from /home/orta/dev/puzmo/redwood-codegen-api-types/npm/esm/deps/deno.land/std@0.168.0/testing/snapshot.js
```

I bet for testing `.snap` files need to be migrated with other files? For build - unsure. Right now, I just made it skip both, though I may just drop the snapshot, it's only 1 and I only like using [inline snapshots](http://orta.io/notes/tests/inline-snapshots) anyway