[tools] Fix map search

Bug: v8:10644
Change-Id: I8aaaf7337a92ef4962848a550ad1b80a65e3bc23
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2565350Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Sathya Gunasekaran  <gsathya@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71491}

tools/system-analyzer/view/map-panel.mjs

@@ -57,13 +57,13 @@ DOM.defineCustomElement('view/map-panel',
     let searchBar = this.$('#searchBarInput');
     let searchBarInput = searchBar.value;
     // access the map from model cache
-    let selectedMap = MapLogEntry.get(parseInt(searchBarInput));
+    let selectedMap = MapLogEntry.get(searchBarInput);
     if (selectedMap) {
       searchBar.className = 'success';
+      this.dispatchEvent(new FocusEvent(selectedMap));
     } else {
       searchBar.className = 'failure';
     }
-    this.dispatchEvent(new FocusEvent(selectedMap));
   }
 
   set selectedMapLogEntries(list) {