fix: reset TOTAL_HALT_COUNT

Follow-up to 0f34970, which claimed
to reset this value, but did not actually.

crates/core/app/src/app/mod.rs

@@ -558,7 +558,7 @@ impl App {
 ///
 /// Increment this manually after fixing the root cause for a chain halt: updated nodes will then be
 /// able to proceed past the block height of the halt.
-const TOTAL_HALT_COUNT: u64 = 2;
+const TOTAL_HALT_COUNT: u64 = 0;
 
 #[async_trait]
 pub trait StateReadExt: StateRead {