CachingCostBalancerStrategy does not load multiple segments having granularity ALL

### Affected Version

All

### Description

Load example data twice with different datasource name with `ALL` segment granularity, segment for first datasource will be loaded but other segment will not be loaded as this strategy will calculate Infinite cost for loading it. This is not a problem with `cost` balancer strategy.

Reproduce the case by loading the same example data twice under different datasource names with ALL segment granularity. Start in CachingCostBalancerStrategy and trace why the second segment receives infinite loading cost; done means both datasource segments load, matching the behavior of the cost balancer strategy.

Written by the indexing model from the issue text.