fix(emulator): returned support for web launching wasm in the browser

[Danil42Russia]

After committing f9db7bd, WASM stopped working in the browser. This causes the error Failed to trace transaction: __dirname is not defined.

Due to this issue, it is not possible to run the sandbox in the browser, which prevents adding support for 12 TVM in TxTracer.

I compiled the version locally and replaced them in sandbox, the tests are passing successfully:

If you look at the diff emulator-emscripten.js, you can see that ENVIRONMENT_IS_WEB and ENVIRONMENT_IS_NODE are now calculated based on the environment:

See:

1. https://emscripten.org/docs/tools_reference/settings_reference.html#environment

[neodix42]

There were issues in running sandbox tests under nodejs with the web mode. Let me double check with the team.