TS build: Fix that path alias to TS files stay unresolved.

[williamvinogradov]

Fixed the issue that the path alias from the tsconfig isn't resolved after the build.

Problem:
E.g. we have the following paths in the tsconfig:

"paths": {
  "@core-utils/*": "./__internal/core/utils/*"
}

And use is in TS module:

import { something } from '@core-utils/something';

Expected behavior (after fix):
After the build we see resolved import in the js module:

var something = require("../../../../core/utils/something");

Current behavior:
Import isn’t resolved:

var something = require("@core-uitls/something");