[2.3.0] Checkmk Werk 16123 created: Use the original message text for rewriting the comment field

[//]: # (werk v2) # Use the original message text for rewriting the comment field key | value ---------- | --- date | 2024-09-11T13:54:07+00:00 version | 2.3.0p17 class | fix edition | cre component | ec level | 1 compatible | yes Werk 16534 made the rewriting of the comment field use the comment field itself as the basis. For this field, it doesn't really make sense, because rewriting is the only way to fill that field, so e.g. \0 was always empty. With this change, we revert to the old behaviour where all match groups refer to the original message text.