fix(telescope): resolve preview window via status.layout.preview.winid

[bassemkaroui]

Problem

Navigating :Telescope notify on a current telescope.nvim build raises:

Invalid 'window': Expected Lua number
stack traceback:
    [C]: in function 'nvim_win_get_config'
    ...lazy/nvim-notify/lua/telescope/_extensions/notify.lua:105: in function 'define_preview'
    ...telescope.nvim/lua/telescope/previewers/buffer_previewer.lua:454: in function 'preview'
    ...

The error fires on every arrow-key navigation (shift_selection) and on VimResized, making the picker unusable.

Cause

telescope.nvim dropped the status.preview_win field in nvim-telescope/telescope.nvim@e6cdb4d (feat!: require Nvim 0.11 and drop compat shims, #3636). The preview window id is now exposed as status.layout.preview.winid (see telescope's own buffer_previewer.lua:419). status.preview_win is therefore nil, which nvim_win_get_config rejects.

Fix

Resolve the preview window id via status.layout.preview.winid, falling back to status.preview_win for backward compatibility with older telescope versions.

local preview_win = (status.layout and status.layout.preview and status.layout.preview.winid)
  or status.preview_win

Testing

• Opened :Telescope notify with a few queued notifications.
• Navigated with <C-n> / <C-p> — preview renders, no more Invalid 'window' error.
• Resized the terminal while the picker was open — VimResized autocmd no longer throws.
• Sanity-checked against an older telescope (where only status.preview_win exists) — fallback keeps the extension working.