fix #3432: apparently there was no code path reaching...

fix #3432: apparently there was no code path reaching _reset_already_committed_statements in our tests :-(
_reset now requires an argument, use _force_reset

--HG--
branch : release-pypy3.7-v7.x
2 jobs for release-pypy3.7-v7.3.5 in 8 minutes and 45 seconds
latest
Status Name Job ID Coverage
  Test
passed check_rpython_annotations #199823

00:07:08

passed hpy_tests #199824

00:08:44