fix: show input error if chosen nonce is not an integer (#3609)

* fix: show input error if chosen nonce is not an integer

* Change error message to be more understandable

src/components/tx-flow/common/TxNonce/index.tsx

@@ -101,6 +101,7 @@ enum ErrorMessages {
   NONCE_TOO_HIGH = 'Nonce is too high',
   NONCE_TOO_FAR = 'Nonce is much higher than the current nonce',
   NONCE_GT_RECOMMENDED = 'Nonce is higher than the recommended nonce',
+  NONCE_MUST_BE_INTEGER = "Nonce can't contain decimals",
 }
 
 const MAX_NONCE_DIFFERENCE = 100
@@ -168,6 +169,10 @@ const TxNonceForm = ({ nonce, recommendedNonce }: { nonce: string; recommendedNo
             return ErrorMessages.NONCE_TOO_HIGH
           }
 
+          if (!Number.isInteger(newNonce)) {
+            return ErrorMessages.NONCE_MUST_BE_INTEGER
+          }
+
           // Update context with valid nonce
           setNonce(newNonce)
         },