Introduced by #6773 (but will soon need to be updated in the conda feedstock also)
Relevant issue links:

• RecursionError when loading file in python 3.14 #6762
• parallel problem in matplotlib : [MNT]: Python 3.14: multiple RecursionErrors when running tests  matplotlib/matplotlib#29185
  • N.B. this indicates that we may need to wait to remove, until fixed in all our dependencies