`owner_by_id` updated from TreeMap to UnorderedMap#810

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zavodil wants to merge 1 commit intomasterfrom non_fungible_token_owner_by_id_fix

+48-6

Commits on May 9, 2022

owner_by_id updated from TreeMap to Unordered map due to #800 . simulate_mass_mint test introduced
zavodil
committed