[BUG][Tiered Caching] Fix test testComputeIfAbsentWithFactoryBasedCacheCreation

[sgup432]

Describe the bug

Currently the unit test TieredSpilloverCacheTests.testComputeIfAbsentWithFactoryBasedCacheCreation passes but the onHeap cache size is always zero in this case as we are not adding appropriate settings/feature flag

Related component

Search:Performance

To Reproduce

Check fortieredSpilloverCache.getOnHeapCache().count() > 0 in the end of test. Test would fail where it shouldn't ideally.

Expected behavior

OnHeap cache tier size should > 0 for testComputeIfAbsentWithFactoryBasedCacheCreation

Additional Details

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• Version [e.g. 22]

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