Summary:
Increased period that is used by the test to mark partitions as stale in TSAN mode.

With existing period we are getting into situation when partition list version is increased faster than MetaCache fetches partitions list.
MetaCache checks that received partition list version is the same as requested, otherwise new request is send.
But partition list version is increased while this request is being process, and MetaCache have to query it again and again.

Jira: DB-14310

Test Plan: ./yb_build.sh tsan --gtest_filter ClientTest.EmptiedBatcherFlush -n 100

Reviewers: timur

Reviewed By: timur

Subscribers: ybase

Tags: #jenkins-ready

Differential Revision: https://phorge.dev.yugabyte.com/D40210