Bug: Creating Note Outside Reviewer Throws Error (Note Creates Successfully)

[harrisoncramer]

Bug Description

When creating a note before the reviewer pane is opened you see this error:

Error executing vim.schedule lua callback: ...v-plugins/gitlab/lua/gitlab/actions/discussions/tree.lua:457: Invalid 'window': Expected Lua number
stack traceback:
	[C]: in function 'nvim_win_set_cursor'
	...v-plugins/gitlab/lua/gitlab/actions/discussions/tree.lua:457: in function 'restore_cursor_position'
	...v-plugins/gitlab/lua/gitlab/actions/discussions/init.lua:498: in function 'rebuild_unlinked_discussion_tree'
	...v-plugins/gitlab/lua/gitlab/actions/discussions/init.lua:47: in function 'callback'
	...v-plugins/gitlab/lua/gitlab/actions/discussions/init.lua:66: in function 'cb'
	...mer/.config/nvim/dev-plugins/gitlab/lua/gitlab/state.lua:626: in function 'callback'
	...ramer/.config/nvim/dev-plugins/gitlab/lua/gitlab/job.lua:44: in function ''

This is occurring because the discussion tree may not be open, it's an error on line 457 of tree.lua where we attempt to set the window cursor.

Reproduction Steps

Create a note, before opening the reviewer pane.

[jakubbortlik]

Interestingly, I cannot reproduce this on either main or develop. When I start neovim and type gln, everything works just fine. Just like when I run :lua require("gitlab").create_note().