[dartdev] Delete and create dylibs instead of truncate
TEST=Tested locally. Will add a test case upstream in dart-lang/native
and roll that in.
Bug: https://github.com/dart-lang/native/issues/2921
Change-Id: I8010131cc70afe5bcee30edf076f18efe0c9a8c4
Cq-Include-Trybots: luci.dart.try:pkg-linux-release-try,pkg-mac-release-arm64-try,pkg-win-release-try,pkg-linux-debug-try,pkg-linux-release-arm64-try,pkg-mac-release-try
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/471240
Reviewed-by: Martin Kustermann <kustermann@google.com>
Commit-Queue: Daco Harkes <dacoharkes@google.com>
Daco Harkes
3e020921c6