avoid overwriting `proofsEnabled` through default parameter #4494

Job	Run time
Prepare	54s
Build-And-Test-Web	3m 40s
Build-And-Test-Server (Simple integration tests)	43m 54s
Run unit tests parallel (1)	50s
Build-And-Test-Server (Reducer integration tests)	15m 40s
Run unit tests parallel (2)	27m 1s
Build-And-Test-Server (DEX integration tests)	17m 15s
Run unit tests parallel (3)	6m 3s
Build-And-Test-Server (DEX integration test with proofs)	16m 27s
Run unit tests parallel (4)	20m 31s
Build-And-Test-Server (Voting integration tests)	6m 20s
Run unit tests parallel (5)	13m 48s
Build-And-Test-Server (Verification Key Regression Check)	1h 20m 47s
Run unit tests parallel (6)	8m 27s
Run unit tests parallel (7)	14m 24s
Build-And-Test-Server (CommonJS test)	1m 30s
Run unit tests parallel (8)	2m 21s
Build-And-Test-Server (Unit tests)	1s
Release-on-NPM	0s
Release-mina-signer-on-NPM	0s
	4h 39m 53s

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