SI-8029 Avoid multi-run cyclic error with companions, package object

The bug report suggests this problem only became visible in the
IDE *after* 2.10.3, but I tested an IDE with exactly 2.10.3 and
saw the same problem.

In fact, my test case fails as far back as 2.10.0. I suspect the
problem showed up after 816cecf9a9, which checks that pairs of
companion symbols are codefined eagerly in Namers.

This commit modifies the check of `rawInfo ne NoType`
in `isCoDefinedWith` to avoid triggering adaptation of types from
the previous run. I'm not sure of the precise intent of that check.
I looked at c9861cd198 (genesis of isCoDefinedWith). Before that we
get back to 3761cb4b3a1 (the dawn of Subversion.)

Review by @adriaanm