[2.4.0] Checkmk Werk 16697 created: Ignore empty "Multiple sites" filter if "Site" filter is set

[//]: # (werk v2) # Ignore empty "Multiple sites" filter if "Site" filter is set key | value ---------- | --- compatible | yes version | 2.4.0b1 date | 2024-04-23T06:07:04+00:00 level | 1 class | fix component | multisite edition | cre If both filters "Multiple sites" and "Sites" were set, the "Multiple sites" filter was used, even if empty.