build: stop distclean from deleting v8 files
Stop make distclean
from deleting files in the deps/v8/testing/gmock
folder, thus avoiding deleting version-controlled files important for
v8.
Fixes: https://github.com/nodejs/node/issues/21163
Checklist
-
make -j4 test
(UNIX), orvcbuild test
(Windows) passes -
tests and/or benchmarks are included -
documentation is changed or added -
commit message follows commit guidelines
/cc @trott @targos @nodejs/build