[infra] Clean up MB config after builder split

Bug: v8:12253
Change-Id: I71094a61649763db1d71d0c8fe757b16439b72a4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3245345Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Almothana Athamneh <almuthanna@chromium.org>
Cr-Commit-Position: refs/heads/main@{#77573}

infra/mb/mb_config.pyl

@@ -181,8 +181,8 @@
       'V8 Android Arm - builder': 'release_android_arm',
       'V8 Linux - arm - sim': 'release_simulate_arm',
       'V8 Linux - arm - sim - debug': 'debug_simulate_arm',
-      'V8 Linux - arm - sim - lite': 'release_simulate_arm_lite',
-      'V8 Linux - arm - sim - lite - debug': 'debug_simulate_arm_lite',
+      'V8 Linux - arm - sim - lite - builder': 'release_simulate_arm_lite',
+      'V8 Linux - arm - sim - lite - debug builder': 'debug_simulate_arm_lite',
       # Arm64.
       'V8 Android Arm64 - builder': 'release_android_arm64',
       'V8 Android Arm64 - debug builder': 'debug_android_arm64',