Spell checking is NOT enabled for this file. - for .ipynb file inside WSL #4900
Description
If I open an .ipynb file located on my Windows file system, spell checking works as expected.
However, when opening a Jupyter notebook that lives in my Windows Subsystem for Linux (WSL) directory e.g.
\\wsl.localhost\Ubuntu\home\user\file.ipynb
spell checking no longer works, with the messages
Spell - Spell checking is NOT enabled for this file. - File Type: `python` is NOT enabled.
and
Spell - Spell checking is NOT enabled for this file. - File Type: `markdown` is NOT enabled.
depending on the cell.
This seems similar to #3819, but I'm not sure of this.