Disable rtc_cc_test _bin targets on win_x86_more_configs

rtc_cc_test unconditionally instantiated a standalone <target>_bin
executable in addition to the rtc_library linked into the aggregated
rtc_test_suite. Because gn analyze passes 'all' as an additional
compile target, every affected <target>_bin executable was being
linked in each phase of win_x86_more_configs (~180 redundant .exe +
.exe.pdb links per phase), causing multi-hour link bottlenecks.

Add rtc_build_cc_test_bins (defaulting to true) to gate the standalone
<target>_bin target, and set rtc_build_cc_test_bins=false for the
win_x86_more_configs phase configs in mb_config.pyl.

Bug: webrtc:498394143
Change-Id: I826891ddfc0e098d3ffccd7984acb5b02e787f72
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/508161
Reviewed-by: Jeremy Leconte <jleconte@google.com>
Commit-Queue: Fredrik Solenberg <solenberg@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#48840}