## Description 

The current approach to wrapped object indexing uses `SuiMoveStruct`
which hides some underlying types like `Balance` which causes it to miss
indexing such types. Instead, we will start using `MoveStruct` i.e. the
actual underlying type and retain the same functionality (i.e we will
continue to skip indexing string and url types which we were doing
before with `SuiMoveStruct` as well)

## Test Plan 

Added balance type in the test to check if things work as expected