fix: add skip_if_discovery method

[b-matteo]

Add skip_if_discovery method
skip export tests for unsupported formats in Discovery

Description

Please provide a brief description of the changes made in this pull request.
Skip unsupported formats when testing against Discovery

Issue linked

Please mention the issue number or describe the problem this pull request addresses.
#2201

Checklist

• I have tested my changes locally.
• I have followed the coding style guidelines of this project.
• I have added appropriate unit tests.
• I have reviewed my changes before submitting this pull request.
• I have linked the issue or issues that are solved to the PR if any.
• I have assigned this PR to myself.
• I have added the minimum version decorator to any new backend method implemented.
• I have made sure that the title of my PR follows Conventional commits style (e.g. feat: extrude circle to cylinder)

[Copilot]

Pull Request Overview

This PR adds a new skip_if_discovery utility function to skip export tests when running on Discovery backend, as these formats are not supported on that platform.

• Added skip_if_discovery function in conftest.py to check for Discovery backend types
• Applied skip condition to several export test functions that use unsupported formats on Discovery

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
tests/integration/conftest.py	Implements the new skip_if_discovery utility function
tests/integration/test_design_export.py	Applies the skip condition to export tests for scdocx and fmd formats

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.81%. Comparing base (48e8ca1) to head (956305e).
⚠️ Report is 6 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2202   +/-   ##
=======================================
  Coverage   94.81%   94.81%           
=======================================
  Files         141      141           
  Lines       10404    10404           
=======================================
  Hits         9865     9865           
  Misses        539      539           

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[RobPasMue]

Are both paradolid txt and SCDOCX not accepted in Disco? I would just skip the one that gives problems and adapt the message accordingly