[Fix]: Clear previous simulation results when validation fails in CPU Scheduling Simulator (#1545)

Fix validation error not clearing previous simulation results

Author: Swetha-Varma-K

public/CpuScheduler/index.html

@@ -135,6 +135,17 @@ <h2 id="algoTitle">First Come First Serve</h2>
           <div class="legend-wrap" id="ganttLegend"></div>
         </div>
 
+        function showError(message) {
+            elements.errorText.textContent = message;
+            elements.errorMessage.classList.remove('hidden');
+            elements.results.style.display = 'none';
+            elements.outputTable.innerHTML = '';
+            elements.ganttChart.innerHTML = '';
+            elements.processLegend.innerHTML = '';
+            elements.metricsPanel.innerHTML = '';
+            elements.analysisContent.innerHTML = '';
+            elements.errorMessage.scrollIntoView({ behavior: 'smooth' });
+        }
         <!-- Process results table -->
         <div class="section">
           <div class="section-title">Process Results</div>