record use_remoteexec and use_reclient in gn_logs.txt

Siso will read gn_logs.txt to check use_reclient
instead of reading args.gn
to work with use_reclient default value change.

Should be no behavior change.

Bug: 341167943
Change-Id: I0ba6c30e458534017bf7f7073d62e0dd86c78602
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6048107
Auto-Submit: Fumitoshi Ukai <ukai@google.com>
Reviewed-by: Junji Watanabe <jwata@google.com>
Commit-Queue: Fumitoshi Ukai <ukai@google.com>
Cr-Commit-Position: refs/heads/main@{#1388606}