fix: allow tx decoding to fail in GetBlockWithTxs (#20323)

Author: facundomedica

x/auth/CHANGELOG.md

@@ -63,3 +63,4 @@ Ref: https://keepachangelog.com/en/1.0.0/
 * [#19148](https://github.com/cosmos/cosmos-sdk/pull/19148) Checks the consumed gas for verifying a multisig pubKey signature during simulation.
 * [#19239](https://github.com/cosmos/cosmos-sdk/pull/19239) Sets from flag in multi-sign command to avoid no key name provided error.
 * [#19099](https://github.com/cosmos/cosmos-sdk/pull/19099) `verifyIsOnCurve` now checks if we are simulating to avoid malformed public key error.
+* [#20323](https://github.com/cosmos/cosmos-sdk/pull/20323) Ignore undecodable txs in GetBlocksWithTxs.

x/auth/tx/service.go

@@ -186,13 +186,13 @@ func (s txServer) GetBlockWithTxs(ctx context.Context, req *txtypes.GetBlockWith
 	if req.Pagination != nil && req.Pagination.Reverse {
 		for i, count := offset, uint64(0); i > 0 && count != limit; i, count = i-1, count+1 {
 			if err = decodeTxAt(i); err != nil {
-				return nil, err
+				sdkCtx.Logger().Error("failed to decode tx", "error", err)
 			}
 		}
 	} else {
 		for i, count := offset, uint64(0); i < blockTxsLn && count != limit; i, count = i+1, count+1 {
 			if err = decodeTxAt(i); err != nil {
-				return nil, err
+				sdkCtx.Logger().Error("failed to decode tx", "error", err)
 			}
 		}
 	}