[vm/bytecode] Disable incremental compilation if bytecode is used
[vm/bytecode] Disable incremental compilation if bytecode is used

Bytecode generation doesn't work on incremental components as they
omit core libraries. As a temporary workaround, this CL disables
incremental compilation in bytecode mode in order to be able to run VM
with '--use-bytecode-compiler --observe' and get profiles.

Change-Id: Id843a03871d959e11acfb8f046019aa756ee7c65
Reviewed-on: https://dart-review.googlesource.com/c/88233
Commit-Queue: Alexander Aprelev <dfb74c35a357c2059971a4bf7fe26b6a7c18085d@google.com>
Auto-Submit: Alexander Markov <239e774fd29abc1267878f57afe1a8a03e0ca887@google.com>
Reviewed-by: Alexander Aprelev <dfb74c35a357c2059971a4bf7fe26b6a7c18085d@google.com>

dart-lang/sdk,dart-lang/sdk,dartino/dart-sdk,dart-archive/dart-sdk,dart-lang/sdk,dartino/dart-sdk,dart-archive/dart-sdk,dartino/dart-sdk,dart-archive/dart-sdk,dart-archive/dart-sdk,dartino/dart-sdk,dart-lang/sdk,dartino/dart-sdk,dart-lang/sdk,dartino/dart-sdk,dart-archive/dart-sdk,dart-archive/dart-sdk,dartino/dart-sdk,dart-archive/dart-sdk,dart-archive/dart-sdk,dartino/dart-sdk,dart-lang/sdk,dartino/dart-sdk,dart-lang/sdk,dart-archive/dart-sdk,dart-lang/sdk