ethereum: Handle mixed block formats in recent_blocks_cache (#6312) #10949

Job	Run time
Run integration tests	5m 1s
Clippy linting	1m 42s
Build in release mode	1m 25s
Subgraph Runner integration tests	2m 51s
Run unit tests	2m 59s
Check rustfmt style	17s
	14m 15s

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