Remove statefullness from DKG instances #582

Job	Run time
check	31s
yarn-test (stable, wasm32-unknown-unknown)	2m 2s
python-test (stable, wasm32-unknown-unknown, 3.11)	1m 50s
wasm-test (1.67, wasm32-unknown-unknown)	4m 40s
python-test (stable, wasm32-unknown-unknown, 3.12)	2m 1s
wasm-test (stable, wasm32-unknown-unknown)	4m 30s
test (x86_64-unknown-linux-gnu, 1.67)	2m 44s
test (x86_64-unknown-linux-gnu, stable)	2m 42s
compile-benchmarks	3m 23s
codecov	7m 27s
benchmark	0s
	31m 50s

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