Re-enable catch test on Windows?

https://github.com/r-lib/testthat/blob/bda252b55808320e552f2e6d6fe79e571182d3c0/tests/test-catch.R#L7

Looks like it was disabled 9 years ago -- my understanding is the Windows toolchain has improved dramatically in the interim:

e74d00236d38221a9bbb3c01b1fd633d8af6c38f