Fixes #489

The issue here is that the autocorrections for Style/VerboseBlock and Performance/MinMaxAfterMap are overlapping.

For Performance/MinMaxAfterMap, we (1) replace map with max_of and (2) remove .max.

list.map { |i| i.size }.max
     ^^^                ^^^
     (1)                (2)

(1) is overwritten by Style/VerboseBlock, which replaces map { |i| i.size } with map(&.size).

list.map { |i| i.size }.max
     ^^^^^^^^^^^^^^^^^^ ^^^
        map(&.size)     (2)

As a result, we get

list.map(&.size)

My proposed fix is to run incompatible autocorrections separately instead of all at once.

So first we'll correct Performance/MinMaxAfterMap

list.map { |i| i.size }.max
     ^^^                ^^^
     (1)                (2)

to get

list.max_of { |i| i.size }

Then, we'll correct Style/VerboseBlock to get

list.max_of(&:size)