Reland "Activate is_offcial_build option for perf builders"

This reverts commit 5a7c5879.

Reason for revert: The build time improved since we compile only
the d8 target now and removed the packaging step from the v8 recipe.

Original change's description:
> Revert "Activate is_offcial_build option for perf builders"
>
> This reverts commit b3c6e1ac.
>
> Reason for revert: The build time incresed significantly. We want to investigate if we can reduce it by removing the 'packaging' step.
>
> Original change's description:
> > Activate is_offcial_build option for perf builders
> >
> > Bug: v8:9898
> > Change-Id: I41e1fcb37755906e29e6937b805cfb3018e90438
> > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1888937
> > Reviewed-by: Michael Achenbach <machenbach@chromium.org>
> > Commit-Queue: Liviu Rau <liviurau@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#64640}
>
> TBR=machenbach@chromium.org,tmrts@chromium.org,liviurau@chromium.org
>
> Change-Id: Ifbae1d7aedbfb7e4f7622c5a2bec74bc2f06e7f6
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Bug: v8:9898
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1890092
> Reviewed-by: Michael Achenbach <machenbach@chromium.org>
> Commit-Queue: Liviu Rau <liviurau@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#64645}

TBR=machenbach@chromium.org,tmrts@chromium.org,liviurau@chromium.org

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: v8:9898
Change-Id: I02ec32d0832059a2d85199ef3a1940194f7d266a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1900450
Commit-Queue: Liviu Rau <liviurau@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#64792}

infra/mb/mb_config.pyl

@@ -695,8 +695,7 @@
     },
 
     'official': {
-      # TODO(liviurau): switch this to true after new perf builders are in use
-      'gn_args': 'is_official_build=false',
+      'gn_args': 'is_official_build=true',
     },
 
     'shared': {