Fixes error in apply_actions method in NonHolonomicAction action term.

[KyleM73]

Description

After indexing the size of quad_w in the apply_actions method is (N,B,4) where B will always equal 1, since it is enforced in the __init__ that only one body name is passed to the action term config. However, the euler_xyz_from_quat method requires inputs to be size (N,4), and so an error is thrown for input size (N,1,4). This PR just creates a (N,4) view of quat_w to be passed to euler_xyz_from_quat. This simple change does not introduce any new warnings and works with a simple non holonomic robot, like the Clearpath Husky.

Type of change

• Bug fix (non-breaking change which fixes an issue)

Checklist

• I have run the pre-commit checks with ./isaaclab.sh --format
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• I have updated the changelog and the corresponding version in the extension's config/extension.toml file
• I have added my name to the CONTRIBUTORS.md or my name already exists there