Consolidate method of reseting scroll position

## Issues
(1) 4783: New search query does not reset to the top
(2) The current way that Tag Search resets the position can be overridden by the AppRouter's call.

## Approach
Listen to `search` changes as well. This basically covers any search param changes.

Components should probably not call `window.scrollTo` directly as the AppRouter's call might override it.

ui/component/claimListDiscover/view.jsx

@@ -347,8 +347,7 @@ function ClaimListDiscover(props: Props) {
     setPrevOptions(options);
 
     if (didNavigateForward) {
-      // --- Reset to top.
-      window.scrollTo(0, 0); // Prevents onScrollBottom() from re-hitting while waiting for doClaimQuery():
+      // --- Reset the page.
       options.page = 1;
       setPage(options.page);
     } else if (claimSearchResult) {

ui/component/router/view.jsx

@@ -179,7 +179,7 @@ function AppRouter(props: Props) {
     if (!hasLinkedCommentInUrl) {
       window.scrollTo(0, currentScroll);
     }
-  }, [currentScroll, pathname, resetScroll, hasLinkedCommentInUrl]);
+  }, [currentScroll, pathname, search, resetScroll, hasLinkedCommentInUrl]);
 
   // react-router doesn't decode pathanmes before doing the route matching check
   // We have to redirect here because if we redirect on the server, it might get encoded again