Fix default value for hash_collision in EVMState

`false` is a `Bool`. The intended default value.
`False` is the `Prop` representing a contradiction, not the intended default value of `hash_collision`, but since `False` is a decidable proposition, Lean automatically treats this as `decide False` which is a `Bool`.
Although we can actually prove `false = False` in Lean, using `false` directly is preferable.

Clear/EVMState.lean

@@ -162,7 +162,7 @@ structure EVMState : Type where
 deriving DecidableEq
 
 instance : Inhabited EVMState :=
-  ⟨ ∅ , default, default , ∅ , default, ∅ , default , False ⟩
+  ⟨ ∅ , default, default , ∅ , default, ∅ , default , false ⟩
 
 abbrev EVM := EVMState