store: Rename 'queue_wait' section to 'queue_idle' #11258

Job	Run time
Run unit tests	3m 47s
Clippy linting	1m 31s
Run integration tests	4m 14s
Build in release mode	1m 21s
Check rustfmt style	15s
Subgraph Runner integration tests	3m 2s
	14m 10s

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