refactor: Move total asset quantity to asset definition

[DCNick3]

Context

total_asset_quantity map that we store is somewhat redundant and can be stored in the asset definition. This refactor allows us to remove FindTotalAssetQuantityByAssetDefinitionId query, as the total asset quantity can be found by querying the asset definition itself.

Closes #4934.

Solution

• remove asset_total_quantities map from WSV
• add total_quantity field to the AssetDefinition
• remove FindTotalAssetQuantityByAssetDefinitionId query
• replace test usages by the filtered FindAssetsDefinitions

Migration Guide

FindTotalAssetQuantityByAssetDefinitionId:

query(FindAssetsDefinitions::new())
  .filter_with(|asset_definition| asset_definition.id.eq(needle_definition_id))
  .execute_single()?
  .total_quantity

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Checklist

• I've read CONTRIBUTING.md.
• All review comments have been resolved.