[build] Turn off slow dchecks on arm64 nosnap debug

The bot is too slow in it's current configuration.

TBR=bmeurer@chromium.org
NOTRY=true

Change-Id: Ic0318894c4501e47f441c0298a46474afdc45026
Reviewed-on: https://chromium-review.googlesource.com/489502
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44960}

infra/mb/mb_config.pyl

@@ -298,7 +298,8 @@
     'gn_debug_simulate_arm64_asan_edge': [
       'gn', 'debug_bot', 'simulate_arm64', 'asan', 'lsan', 'edge'],
     'gn_debug_simulate_arm64_no_snap': [
-      'gn', 'debug_bot', 'simulate_arm64', 'swarming', 'v8_snapshot_none'],
+      'gn', 'debug', 'simulate_arm64', 'shared', 'goma',
+      'v8_optimized_debug', 'swarming', 'v8_snapshot_none'],
     'gn_debug_simulate_mipsel_asan_edge': [
       'gn', 'debug_bot', 'simulate_mipsel', 'asan', 'edge'],