requiresTotalCountForOffsetLimit

Returns true if toOffsetLimit requires knowing the total count of items to compute the correct offset.

This is the case for backward pagination when only viaduct.api.types.BackwardConnectionArguments.last is specified (no viaduct.api.types.BackwardConnectionArguments.before cursor), because the offset must be computed as totalCount - last.

When this returns true, use toOffsetLimit(Int, Int) with the total count instead of the single-argument overload.