Unshallow RTD clone

[sandorkertesz]

Description

Issue with docs where version is wrong because setuptools_scm cannot find the tags because the clone is shallow. This PR should make the clone no longer shallow, and hence fix the issue

From rtd docs:

Read the Docs does not perform a full clone in the checkout job in order to reduce network data and speed up the build process. Instead, it performs a shallow clone and only fetches the branch or tag that you are building documentation for. Because of this, extensions that depend on the full Git history will fail. To avoid this, it’s possible to unshallow the git clone:

.readthedocs.yaml
version: 2
build:
os: "ubuntu-24.04"
tools:
   python: "3.10"
jobs:
   post_checkout:
     - git fetch --unshallow || true

Contributor Declaration

By opening this pull request, I affirm the following:

• All authors agree to the Contributor License Agreement.
• The code follows the project's coding standards.
• I have performed self-review and added comments where needed.
• I have added or updated tests to verify that my changes are effective and functional.
• I have run all existing tests and confirmed they pass.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 82.44%. Comparing base (9510385) to head (591ed8e).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1045   +/-   ##
=======================================
  Coverage   82.44%   82.44%           
=======================================
  Files         237      237           
  Lines       16757    16757           
  Branches      818      818           
=======================================
+ Hits        13815    13816    +1     
  Misses       2698     2698           
+ Partials      244      243    -1     

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