wmayer 379fd2cf9b App: Fix output string to XML ...

Not all unicode characters are allowed as XML output. When writing disallowed characters the SAX parser throws an exception
when loading a project file that results into a broken document and thus to a possible loss of data.

This PR replaces all disallowed characters with an underscore and prints a warning.

This fixes https://github.com/FreeCAD/FreeCAD/issues/22123
Note: It does not fix an already corrupted project file.

2025-08-31 14:38:05 +02:00

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