Explorer: Show simulation error for Upgrade instruction with none existing buffer (#18838)

explorer/src/pages/inspector/SimulatorCard.tsx

@@ -247,6 +247,15 @@ function useSimulator(message: Message) {
           }
         });
 
+        // If the instruction's simulation returned an error without any logs then add an empty log entry for Runtime error
+        // For example BpfUpgradableLoader fails without returning any logs for Upgrade instruction with buffer that doesn't exist
+        if (instructionError && instructionLogs.length === 0) {
+          instructionLogs.push({
+            logs: [],
+            failed: true,
+          });
+        }
+
         if (
           instructionError &&
           instructionError.index === instructionLogs.length - 1