fix initialisation order issue, introduced in 6b3ab5d1

highlight usages with invokeLater of current modality state: this is needed to highlight usages in preview dialog

overload resolution: proceed with additional constraints when qualifier type is calculated (IDEA-151409)

cls extends list: retrieve same information which was pushed during more specific check as for normal parameters (IDEA-151367)

introduce: show chooser even if expression statement in the line is not a valid statement (IDEA-151889)

Suppose we have alignment sequence A11 A21 A22 A12.
If A12 causes realignment of A11 block we restart formatting from the block after A11.
Whitespace before A21 block will be cleared, since there is no blocks before with the same alignment.
If formatting of A22 also was performed by aligning A21 block, we got in trouble since we count the same backward shift alignment of A2* blocks twice.

Revert nullability annotation of second argument in PyClassTypeImpl.getCallType