This is to account for the flutter_runner migration.
fxb/fl-250 has more context. This change specifically uses
the build rules that were added as a part of: fxr/333681
Adds a Fuchsia compatibility function that allows for connecting to a
specific Isolate by name when running Flutter Driver on a Fuchsia
device. This will check over multiple Dart VM's in an attempt to find
an Isolate by its name.
