[2.4.0] Checkmk Werk 16185 created: BI: rule id remains editable in case of duplicate id error

[//]: # (werk v2) # BI: rule id remains editable in case of duplicate id error key | value ---------- | --- date | 2024-05-08T11:57:22+00:00 version | 2.4.0b1 class | feature edition | cre component | bi level | 1 compatible | yes Previously, when saving a BI rule with a duplicate id, the action resulted in an error. But, the id field wasn't editable anymore, forcing the user to create a new rule from scratch.