[2.2.0] Checkmk Werk 17075 created: Fix regex error when using global flags when matching multiple expressions

Title: Fix regex error when using global flags when matching multiple expressions Class: fix Compatible: compat Component: wato Date: 1718966795 Edition: cre Level: 1 Version: 2.2.0p28 There are a few places where we concatenate multiple regular expressions to save performance. This concatenation broke when expressions using global flags such as "(?i)cpu" were concatenated. With this werk, we are converting these global flags to local ones for that specific expression which restores the expected behavior of the expression, fixing various crashes that would occur for example when updating or activating changes.