When line objects overlap on a map, host icons may not be displayed

• On the edit screen, icons are displayed.
• On the view screen, icons are hidden at first, but appear after waiting several minutes.

Removing the lines on the map resolves the issue.

Please see the attached GIF for details.

• zbx_map_export_layer_bug_repro_7.4.gif

Attachments for reproduction:

• zbx_map_export_layer_bug_repro_7.4.yaml

This seems to be related to changes from ZBXNEXT-875 (Confirmed in Zabbix 7.4.0 and 7.4.2)