Only use Runtime objects in AsyncSubstrateInterface #149

Job	Run time
apply-label-to-new-pr	3s
check-labels	6s
find-e2e-tests	9s
pull-docker-image	21s
run-unit-test	45s
e2e tests: /home/runner/work/async-substrate-interface/async-substrate-interface/btcli/tests/e2e_tests/test_children_hotkeys.py	2m 35s
e2e tests: /home/runner/work/async-substrate-interface/async-substrate-interface/btcli/tests/e2e_tests/test_wallet_interactions.py	3m 12s
e2e tests: /home/runner/work/async-substrate-interface/async-substrate-interface/btcli/tests/e2e_tests/test_wallet_creations.py	1m 24s
e2e tests: /home/runner/work/async-substrate-interface/async-substrate-interface/btcli/tests/e2e_tests/test_unstaking.py	3m 46s
e2e tests: /home/runner/work/async-substrate-interface/async-substrate-interface/btcli/tests/e2e_tests/test_staking_sudo.py	3m 51s
e2e tests: /home/runner/work/async-substrate-interface/async-substrate-interface/btcli/tests/e2e_tests/test_root.py	1m 1s
e2e tests: /home/runner/work/async-substrate-interface/async-substrate-interface/btcli/tests/e2e_tests/test_senate.py	3m 26s
	20m 39s

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