[Fix] Issue #801: Error during Paging (#802)

## Description
Pagination fix for nill pointer

## Type of change

- [x] 🐛 Bugfix## Issue(s)

<!-- Can reference multiple issues. Use one of the following "magic words" - "closes, fixes" to auto-close the Github issue. -->
* closes #801

## Test Plan

- [x] ⚡ Unit test

src/internal/connector/exchange/service_iterators.go

@@ -435,10 +435,12 @@ func iterateFindContainerID(
 	return func(entry any) bool {
 		if isCalendar {
 			entry = CreateCalendarDisplayable(entry)
+		}
 
-			if entry == nil {
+		// True when pagination needs more time to get additional responses or
-				return true
+		// when entry is not able to be converted into a displayable
-			}
+		if entry == nil {
+			return true
 		}
 
 		folder, ok := entry.(displayable)
@@ -451,6 +453,7 @@ func iterateFindContainerID(
 
 			return true
 		}
+
 		// Display name not set on folder
 		if folder.GetDisplayName() == nil {
 			return true