Bug 1477290 - Disable flashing with storage inspector endless scrolling. r=miker

MozReview-Commit-ID: GfRaId6B50I

--HG--
extra : rebase_source : 1198866fc88203251dc2914aaab945f1430c4cdd

devtools/client/storage/ui.js

@@ -1038,11 +1038,11 @@ class StorageUI {
 
       switch (reason) {
         case REASON.POPULATE:
+        case REASON.NEXT_50_ITEMS:
           // Update without flashing the row.
           this.table.push(item, true);
           break;
         case REASON.NEW_ROW:
-        case REASON.NEXT_50_ITEMS:
           // Update and flash the row.
           this.table.push(item, false);
           break;