Fix timeline recentering after manual scroll

src/components/thumbnail.ts

@@ -91,6 +91,7 @@ export class FrigateCardThumbnail extends LitElement {
               view: 'timeline',
               target: this.target,
               childIndex: this.childIndex,
+              context: {},
             })
             .dispatchChangeEvent(this);
         }}

src/components/timeline.ts

@@ -604,11 +604,13 @@ export class FrigateCardTimelineCore extends LitElement {
       ? (this.view.context as TimelineViewContext)
       : undefined;
 
-    if (context && !isEqual(context.window, timelineWindow)) {
+    if (context?.window) {
       console.info(
         `Setting window from context (${context.window.start} -> ${context.window.end}`,
       );
-      this._timeline.setWindow(context.window.start, context.window.end);
+      if (!isEqual(context.window, timelineWindow)) {
+        this._timeline.setWindow(context.window.start, context.window.end);
+      }
     } else if (
       eventStart < timelineWindow.start ||
       eventStart > timelineWindow.end ||