[2.3.0] Checkmk Werk 16067 created: Fix possible "Internal server error" while saving large formulars

Title: Fix possible "Internal server error" while saving large formulars Class: fix Compatible: compat Component: multisite Date: 1698237843 Edition: cre Knowledge: doc Level: 1 Version: 2.3.0i1 Werk #15393 already solved this for most users but in rare cases, the formulars were still so big that an "Internal server error" occurred on saving. This change should fix that behaviour even for such cases.