[DocDB] TabletSplitITest/TabletSplitITestWithIsolationLevel.SplitSingleTablet/READ_COMMITTED

[ttyusupov]

Jira Link: [DB-452](https://yugabyte.atlassian.net/browse/DB-452)

Description

Need to fix.

Source: https://detective.dev.yugabyte.com/stability?num_commits=50&sort=commit&threshold=10

[rthallamko3]

https://detective.dev.yugabyte.com/stability/test?branch=master&build_type=all&class=TabletSplitITest%2FTabletSplitITestWithIsolationLevel&fail_tag=all&name=SplitSingleTablet%2FREAD_COMMITTED&platform=all

[rthallamko3]

Doesn't seem to be an issue since 10/6.

[arybochkin]

There's a similar failure for the following tests TabletSplitITest/TabletSplitITestWithIsolationLevel.SplitSingleTablet/SERIALIZABLE_ISOLATION TabletSplitITest/TabletSplitITestWithIsolationLevel.SplitSingleTablet/READ_COMMITTED TabletSplitITest/TabletSplitITestWithIsolationLevel.SplitSingleTablet/SNAPSHOT_ISOLATION

Log: https://jenkins.dev.yugabyte.com/job/github-yugabyte-db-centos-master-clang15-tsan/562/artifact/build/tsan-clang15-dynamic-ninja/yb-test-logs/tests-integration-tests__tablet-split-itest/TabletSplitITest__TabletSplitITestWithIsolationLevel_SplitSingleTablet__SERIALIZABLE_ISOLATION.log

../../src/yb/integration-tests/tablet-split-itest.cc:203
Failed
Bad status: Internal error (yb/integration-tests/tablet-split-itest-base.cc:821): Missing key: 501 in 2 replicas

[arybochkin]

This is a test-only issue and happening because cluster shutdown is happening faster then last bunch of WRITE ops got replicated, and after restart the test checks replicas data immediately without waiting for WRITE ops replication is completed.