Add begin/end params to multi-graph page redirect

The multi-graph redirect page on the landing page is missing beging/end
times shown in the graph. This CL fixes that.

Bug: b/336336543
Change-Id: If451aaab222cb3243e748cb21dc37452ec7ee173
Reviewed-on: https://skia-review.googlesource.com/c/buildbot/+/849035
Commit-Queue: Vidit Chitkara <viditchitkara@google.com>
Reviewed-by: Ashwin Verleker <ashwinpv@google.com>
diff --git a/perf/modules/explore-simple-sk/explore-simple-sk.ts b/perf/modules/explore-simple-sk/explore-simple-sk.ts
index 2753b25..f905012 100644
--- a/perf/modules/explore-simple-sk/explore-simple-sk.ts
+++ b/perf/modules/explore-simple-sk/explore-simple-sk.ts
@@ -2317,7 +2317,9 @@
     }
 
     window.open(
-      `/m/?pageSize=${pageSize}&shortcut=${newShortcut}&totalGraphs=${graphConfigs.length}`,
+      `/m/?begin=${this._state.begin}&end=${this._state.end}` +
+        `&pageSize=${pageSize}&shortcut=${newShortcut}` +
+        `&totalGraphs=${graphConfigs.length}`,
       '_self'
     );
   }