fix: claimed in staking info endpoint #112

Job	Run time
Build docker image	52s
Build docker image	52s
build-npm-release (18.x)	54s
build-npm-release (18.x)	54s
build	41s
build	41s
e2e (westend, wss://westend-rpc.polkadot.io)	3m 59s
e2e (westend, wss://westend-rpc.polkadot.io)	1m 15s
e2e (kusama, wss://apps-kusama-rpc.polkadot.io)	1m 19s
e2e (kusama, wss://apps-kusama-rpc.polkadot.io)	1m 19s
lint	1m 19s
lint	1m 19s
e2e (polkadot, wss://apps-rpc.polkadot.io)	1m 53s
e2e (polkadot, wss://apps-rpc.polkadot.io)	1m 53s
tests	4m 29s
tests	4m 29s
	28m 8s

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