fix: backport mainnet hotfix to Bitcoin TSS keysign failure

changelog.md

@@ -15,6 +15,7 @@
 ### Fixes
 
 * [3501](https://github.com/zeta-chain/node/pull/3501) - fix E2E test failure caused by nil `ConfirmationParams` for Solana and TON
+* [3509](https://github.com/zeta-chain/node/pull/3509) - schedule Bitcoin TSS keysign on interval to avoid TSS keysign spam
 
 ### Tests
 

zetaclient/chains/bitcoin/bitcoin.go

@@ -133,6 +133,8 @@
 	chain := b.observer.Chain()
 	chainID := chain.ChainId
 	lookahead := b.observer.ChainParams().OutboundScheduleLookahead
+	// #nosec G115 positive
+	scheduleInterval := uint64(b.observer.ChainParams().OutboundScheduleInterval)
 
 	cctxList, _, err := b.observer.ZetacoreClient().ListPendingCCTX(ctx, chain)
 	if err != nil {
@@ -178,13 +180,16 @@
 			continue
 		}
 
-		go b.signer.TryProcessOutbound(
-			ctx,
-			cctx,
-			b.observer,
-			b.observer.ZetacoreClient(),
-			zetaHeight,
-		)
+		// schedule TSS keysign if retry interval has arrived
+		if nonce%scheduleInterval == zetaHeight%scheduleInterval {
+			go b.signer.TryProcessOutbound(
+				ctx,
+				cctx,
+				b.observer,
+				b.observer.ZetacoreClient(),
+				zetaHeight,
+			)
+		}
 	}
 
 	return nil