[Test Update] Table Visualization split table.

[curq]

In this PR, The custom class visTable__groupInColumns was removed, and now it causes failure of the tests.
Specifically, this test case:

opensearch-dashboards-functional-test/cypress/integration/core-opensearch-dashboards/opensearch-dashboards/apps/vis_builder/vis_types/table.spec.js

Line 60 in 6823c82

testSplitTables('visTable__groupInColumns', 4);

The PR in question, moves the split tables direction logic from the custom css classes to OuiFlex components for better OUI compliance, so the visTable__groupInColumns will be removed by it and therefore the tests need to be updated to reflect this change.

[joshuarrrr]

completed via #731, this can be closed.

[joshuarrrr]

@dblock Can you help get someone to close this untriaged issue?