fix: validate staking amount while filling the form (#70) #31

Job	Run time
lint_test / build	1m 30s
docker_build (devnet)	1m 46s
docker_build (staging)	1m 57s
docker_build (testnet)	1m 59s
docker_build (mainnet-private)	1m 50s
docker_build (mainnet)	1m 40s
dockerhub_publish (devnet)	27s
ecr_publish (devnet)	36s
dockerhub_publish (staging)	28s
ecr_publish (staging)	40s
dockerhub_publish (testnet)	28s
ecr_publish (testnet)	37s
dockerhub_publish (mainnet-private)	17s
ecr_publish (mainnet-private)	37s
dockerhub_publish (mainnet)	16s
ecr_publish (mainnet)	36s
	15m 44s

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