I've set `lexical-binding` to `nil` in all Emacs Lisp files to suppress
the warnings introduced in Emacs 31 requiring all elisp files to have a
`lexical-binding` comment.
This retains the default behavior of dynamic binding when no
`lexical-binding` comment is present. With it set to `t` across the
board, various things break, and fixing those is a task for another day.
When the global-treesit-auto-mode is enabled, was getting lots of errors
related to an infinite loop whenever opening a buffer supported by one
of `*-ts-mode` modes. Instead, I now take a more manual and intentional
approach to using the built-in treesit modes for specific languages.
