The auto-refresh has a bit of a delay so it can happen that when a user
runs `codelens.run` it operates on an outdated state and either
does nothing, or fails.
This changes the logic for `.run` to always fetch the current lenses
before (optional) prompt and execution.
See discussion in https://github.com/neovim/neovim/pull/37689#discussion_r2764235931
This could potentially be optimized to first check if there's local
state with a version that matches the current buf-version, but in my
testing re-fetching them always was quickly enough that `run` still
feels instant and doing it this way simplifies the logic.
Side effect of the change is that `.run` also works if codelens aren't
enabled - for power users who know what the codelens would show that can
be useful.
c4f322b769