v3-infrastructure: fix for async sequences within sync loop in tests
v3-infrastructure: fix for async sequences within sync loop in tests

This is the problem of es2017-compiled distributive, which is used by default nowadays. The problem relates to async-await and zone.js interferention. Some details are here: https://github.com/angular/angular/issues/31730

dhilt/ngx-ui-scroll,dhilt/ngx-ui-scroll