Fix json decoding empty object streams #2837

Job	Run time
lint	6m 3s
build ([email protected], 2.12.18, JVM)	5m 19s
build ([email protected], 2.12.18, Native)	29m 0s
build ([email protected], 2.12.18, JS)	18m 46s
build ([email protected], 2.13.12, JVM)	5m 34s
build ([email protected], 2.13.12, Native)	29m 24s
build ([email protected], 2.13.12, JS)	19m 12s
build ([email protected], 3.3.1, JVM)	2m 28s
build ([email protected], 3.3.1, Native)	10m 53s
build ([email protected], 3.3.1, JS)	3m 40s
build ([email protected], 2.12.18, JVM)	5m 10s
build ([email protected], 2.12.18, Native)	28m 41s
build ([email protected], 2.12.18, JS)	18m 40s
build ([email protected], 2.13.12, JVM)	4m 51s
build ([email protected], 2.13.12, Native)	29m 15s
build ([email protected], 2.13.12, JS)	20m 9s
build ([email protected], 3.3.1, JVM)	2m 16s
build ([email protected], 3.3.1, Native)	10m 20s
build ([email protected], 3.3.1, JS)	3m 18s
publish	0s
	4h 12m 59s

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