docs: adapt examples to use launch_modeler instead of Modeler obj connection

[RobPasMue]

Description

Coming from the Ansys Lab team - we should adapt our examples so that they can also be easily consumed on Ansys Lab... and not only that but any user that wants to try them locally! Most of them were assuming that there was a running service in the backend - which is not the usual case.

Issue linked

None

Checklist

• I have tested my changes locally.
• I have added necessary documentation or updated existing documentation.
• 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)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.85%. Comparing base (2c80e5f) to head (685f66d).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1410   +/-   ##
=======================================
  Coverage   91.85%   91.85%           
=======================================
  Files          86       86           
  Lines        6873     6873           
=======================================
  Hits         6313     6313           
  Misses        560      560           

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