To properly resolve qualifier parts in the middle,
we need to resolve the whole qualifier to understand
which parts of the qualifier are package or class qualifiers.
And then we will be able to resolve the qualifier
selected by the user to the proper class, package or callable.
^KT-59189
1. Optimize it by removing a tower data context collection (KT-59189)
2. Rework the behavior, so it simulates the tower resolve by returning the set of symbols only from the first tower level, which is not empty
^KT-59189 fixed
`owner` is a PSI element, it can never be an instance of
`KtConstructorSymbol`
Also, make `MutableCollection` an extension receiver instead of context
receiver for the consistency
Egor Kulikov