Typescript bug: if I try use typescript file with .ts extension as a manifest script, build incorrectly replace the script name
### Expectations:
1. I set up typescript for the project
2. I would like to use .ts extension for the scripts as a manifest script
3. I am waiting that everithing will going correct

### Reality:
If I try to use .ts scripts inside manifest, build replace them to incorrect script name:
```json
{
  "name": "Name",
  "commands": [
    {
      "name": "Run",
      "identifier": "run",
      "script": "./run.ts"
    }
  ]
}
```
Will replace to:
```json
{
  "name": "Name",
  "commands": [
    {
      "name": "Run",
      "identifier": "run",
      "script": "./__run_ts"
    }
  ]
}
```

> NOTICE, that *./__run_ts* incorrect script name!