This makes the build the same as the Chromium-based configuration.
This also works around a problem with the Mac bots where the
shader cache workaround isn't operational in non-component builds.

Bug: angleproject:5114
Bug: angleproject:5928
Change-Id: Ib466942f4a69e1ba3e61e078c84d74d0b54bb396
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2875354Reviewed-by: Yuly Novikov <ynovikov@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>