lib: internal: nativeresolver: impl: reverted pre-satisfying

Presatisfying makes resolver impossible to suggest more than one choice
to users for requests with more than one satisfying versions, where one
of them is immediately installable.
lib: internal: nativeresolver: dependencygraph: importance-dependent UserRelationExpressionVertex::getTypePriority()

This should fix many cases of non-trivial upgrades after pre-satisfying
was reverted.
Merge branch 'alt/nativeresolver-no-presatisfy'