renv::init is searching for and parsing dependencies with `bare = TRUE`

[MilesMcBain]

I don't think this needs a reprex because a quick look at the code path here will confirm this is true:
https://github.com/rstudio/renv/blob/master/R/init.R#L94

This seems at odds with the description of bare which says:

bare Boolean; initialize the project without attempting to discover and install R package dependencies?

Discovery is currently being performed which has a couple of unfortunate side effects:

• renv initialisation is slow for the case where you want to manually limit the dependency search scope
• renv can choke parsing files that don't need to be parsed causing unexpected errors (how I discovered this problem, new issue will be created)

[kevinushey]

Thanks! Should be fixed up now.