[BUG] accept valid xml files with prefix <aas

[BirgitBoss]

It seems the validation tool is not able to deal with all files that would be valid.

See for example:

eclipse-esmf/esmf-sdk#603, my comment: eclipse-esmf/esmf-sdk#603 (comment):

"To me it seems the validation tool cannot deal with <aas: prefix

The second issue are the first wo lines:
<?xml version='1.0' encoding='UTF-8'?> <environment xmlns:aas="https://admin-shell.io/aas/3/0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="https://admin-shell.io/aas/3/0 AAS.xsd">

seems they must be converted to

<environment xmlns="https://admin-shell.io/aas/3/0">"

Note: these files are generated like this by [aas4j](https://github.com/eclipse-aas4j/aas4j

[otto-ifak]

I will have a look at it, maybe it is a problem of the underlying XML parser.

[otto-ifak]

@BirgitBoss I guess we discuss the file Aspect3.ttl.aas_corrected.xml from the attached gen.zip? There are multiple issues with this file. For example Constraint_AASd-131 does not hold.