Autocorrect of Style/InverseMethods breaks double negatives

[capripot]

Autocorrect of Style/InverseMethods breaks double negatives for at least regexp checks as following.

---

Given code

!!(string =~ /^\w+$/)

Expected behavior

!!(string =~ /^\w+$/)

Actual behavior

!string !~ /^\w+$/

Steps to reproduce the problem

rubocop -a on files containing the given code

RuboCop version

$ rubocop -V
0.48.1 (using Parser 2.4.0.0, running on ruby 2.2.7 x86_64-darwin16)

[rrosenblum]

It seems like it should be easy enough to ignore double negation.