fix: Watcher not updating on file change

[ALameLlama]

Currently the watcher doesn't always update the git status without reopening fyler, I mostly noticed this when editing files or adding new files.

Before:
Screencast_20260704_133548.webm

After:
Screencast_20260704_133913.webm

[A7Lavinraj]

Replace final schedule call with following:

vim.schedule(function()
  if not watch_state[buf_id] then return end
  if vim.bo[buf_id].modified then return end

  local pending = state.pending_refresh
  state.pending_refresh = nil

  pcall(function() instance:refresh(pending) end)
end)

Because I want it return before setting pending refresh to nil.

[ALameLlama]

Sounds good, I'll update this on the weekend and test it out

[ALameLlama]

Can you hold off on merging this? I've noticed I'm getting a weird flashing only on hidden files. I'll need to look into what is causing this