Reduce incremental state reset interval

Thread loss due to overwrites in ring buffer mode causes some background traces to have no BrowserMain events. Emitting the incremental state more frequently reduces the chance of this data being lost, therefore we reduce the incremental state reset interval from 5 seconds to 0.5 seconds.

Change-Id: I8d3b127ee2a14f16c067e87c92267d3b95d1b6d2
Bug: b/255722903
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4191804
Reviewed-by: Igor Kraskevich <kraskevich@google.com>
Reviewed-by: Mikhail Khokhlov <khokhlov@google.com>
Commit-Queue: Rasika Navarange <rasikan@google.com>
Cr-Commit-Position: refs/heads/main@{#1096203}