package.json should be invalidated when a task is rerun

[soichih]

I've observed a behavior where task handler seems to be using outdated/cached package.json content instead of fetching a new one when I rerun an app - which was failing due to an issue with package.json. When I corrected the issue and rerun, it reported the same error.

I though I've made it so that it will only use cached package.json during status checking, but I need to make sure this or investigate the root cause.