ISSUE-825 Improve refresh without WS (#826)

__test__/features/websocket/utils/notificationStorm.test.tsx

@@ -60,6 +60,7 @@ describe('websocket messages storm', () => {
     ;(getDisplayedCalendarRange as jest.Mock).mockReturnValue(mockRange)
     ;(store.getState as jest.Mock).mockReturnValue(mockState)
     window.WS_DEBOUNCE_PERIOD_MS = 500
+    window.WS_SKIP_DELAY_MS = 0
     mockAccumulators.calendarsToRefresh = new Map<string, any>()
     mockAccumulators.calendarsToHide = new Set()
     mockAccumulators.shouldRefreshCalendarListRef.current = false

__test__/features/websocket/utils/updateCalendars.test.tsx

@@ -53,6 +53,7 @@ describe('updateCalendars', () => {
     mockAccumulators.currentDebouncePeriod = 0
     mockAccumulators.shouldRefreshCalendarListRef.current = false
     mockAccumulators.debouncedUpdateFn = jest.fn()
+    window.WS_SKIP_DELAY_MS = 0
   })
 
   it('should not dispatch for non-object messages', () => {