[vm] Fix default log filtering to include the vm-service.
[vm] Fix default log filtering to include the vm-service.

This was probably broken by some refactoring related to isolate groups.

TEST=--disassemble-stubs
Change-Id: If46259836d2276d50fefc5598f8370bf935ec95e
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/244481
Commit-Queue: Ryan Macnak <d738b7f001baf9789095d7dc549cff6de60b011d@google.com>
Reviewed-by: Ben Konyi <67ffcaedcc3dc3d87dddb9627b72dd41756b31b1@google.com>

dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk