backup plugin: styles.dat.1 has invalid xml structure

Description

Backup archive generated by backup/restore tool (and rest api) can contain unparseable style.dat.1 file. When there's a lot of styles to dump, contents of this file are composed of two separate xml files:

<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
<items>
..(styles list)
</items>
<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
<items>
.. (another styles list)
</items>

Environment

None

Assignee

Alessio Fabiani

Reporter

Cezary Statkiewicz

Triage

None

Fix versions

None

Affects versions

Components

Priority

Medium
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