store: Fix handling of enum arrays #9048

Job	Run time
Build in release mode	1m 3s
Build in release mode	1m 3s
Run integration tests	4m 41s
Run integration tests	4m 41s
Subgraph Runner integration tests	3m 32s
Subgraph Runner integration tests	3m 51s
Clippy linting	1m 5s
Clippy linting	1m 5s
Check rustfmt style	5s
Check rustfmt style	5s
Run unit tests	7m 32s
Run unit tests	7m 32s
	36m 15s

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