Follow-up on "Support multiple workers for NODEFS /wordpress mounts"

[brandonpayton]

We are in the midst of merging a number of large PRs:

• Support multiple workers for NODEFS /wordpress mounts #2231
• [ php-wasm ] Add xdebug shared extension to @php-wasm/node JSPI #2248
• Playground CLI: Use Blueprints v2 #2281

In order to keep things moving, we merged #2231 while it still had some rough edges. This is an issue to follow up on those:

• Find way to stop skipping run-cli tests
• Find way to use normal test setup for test-built-npm-packages
• Fix Asyncify sqlite tests so we can stop skipping them
• Complete multi-worker support with Asyncify

TODO: Add more items from #2231 review comments