CATROID-1652 Add missing Xstream aliases and fix tests

[reichli]

https://catrobat.atlassian.net/browse/CATROID-1652

This commits fixes the subtype-lookup in ClassDiscoverer thereby fixing the two test classes BricksXmlSerializerTest and ScriptsXmlSerializerTest. These tests then uncovered bricks which are not considered during aliasing in the XStreamSerializer. This commit also adds those bricks to ensure proper serialization.

Apparently it also fixes the tests UpdateVariableInFormulaBrickTest, UpdateVariableInFormulaScriptBrickTest and ScriptsBrickDragNDropListTest. Altogether this fixes roughly 1.000 unit tests which did not run previous to this fix.

Also the catrobat language version was increased to 1.14 to account for the newly added bricks.

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[Copilot]

Pull request overview

Fixes XML serialization test coverage by improving subtype discovery in test utilities, adding missing XStream aliases for newly introduced bricks, and bumping the Catrobat language version.

Changes:

• Update ClassDiscoverer Reflections configuration to improve subtype lookup.
• Add XStream aliases for Plot and Laser Cutter bricks to ensure proper serialization.
• Increase CURRENT_CATROBAT_LANGUAGE_VERSION to 1.14.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
catroid/src/test/java/org/catrobat/catroid/test/xmlformat/ClassDiscoverer.java	Adjusts Reflections scanning configuration used by serializer tests to discover subclasses.
catroid/src/main/java/org/catrobat/catroid/io/XstreamSerializer.java	Adds missing aliases for Plot/Laser-related bricks so XML output uses <brick type="..."> consistently.
catroid/src/main/java/org/catrobat/catroid/common/Constants.java	Bumps language version to reflect newly supported bricks.

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[harshsomankar123-tech]

@reichli Thanks! LGTM.