chore(electrum,testenv): move `test_reorg_is_detected_in_electrsd` #70

Job	Run time
Check WASM	38s
Build and test (stable, true, --no-default-features)	2m 4s
clippy_check	35s
Check no_std	34s
Build and test (stable, true, --all-features)	2m 16s
Rust fmt	14s
Build and test (1.63.0, --no-default-features)	2m 36s
Build and test (1.63.0, --all-features)	2m 53s
	11m 50s

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