Add upper bound for withdrawal index

src_features/setEth2WithdrawalIndex/cmd_setEth2WithdrawalIndex.c

@@ -2,6 +2,7 @@
 
 #include "shared_context.h"
 #include "apdu_constants.h"
+#include "withdrawal_index.h"
 
 void handleSetEth2WithdrawalIndex(uint8_t p1,
                                   uint8_t p2,
@@ -18,6 +19,9 @@ void handleSetEth2WithdrawalIndex(uint8_t p1,
     }
 
     eth2WithdrawalIndex = U4BE(dataBuffer, 0);
+    if (eth2WithdrawalIndex > INDEX_MAX) {
+        THROW(0x6A80); // scott throw this error code or create new one ?
+    }
 
     THROW(0x9000);
 }

src_features/setEth2WithdrawalIndex/withdrawal_index.h

@@ -1,5 +1,7 @@
 #include "stdint.h"
 
+#define INDEX_MAX 1337 // scott
+
 void handleSetEth2WithdrawalIndex(uint8_t p1,
                                   uint8_t p2,
                                   uint8_t *dataBuffer,