Matthew Pickering authored Dec 06, 2021 and Marge Bot committed Dec 09, 2021

In 806e49ae the package imports refactoring code was modified to rename
package imports. There was a small oversight which meant the code didn't
account for module visibility. This patch fixes that oversight.

In general the "lookupPackageName" function is unsafe to use as it
doesn't account for package visiblity/thinning/renaming etc, there is
just one use in the compiler which would be good to audit.

Fixes #20779