[BUG] Invalid window id when using tab direction

### Is there an existing issue for this?

- [x] I have searched the existing issues

### Current Behavior

Sometimes, when toggling a terminal opened in the "tab" direction, I get this error:
```lua
Error executing Lua callback: ...cal/nvim-data/lazy/toggleterm.nvim/lua/toggleterm/ui.lua:351: Invalid window id: 1690
stack traceback:
[C]: in function 'nvim_win_close'
...cal/nvim-data/lazy/toggleterm.nvim/lua/toggleterm/ui.lua:351: in function 'close_tab'
...cal/nvim-data/lazy/toggleterm.nvim/lua/toggleterm/ui.lua:398: in function 'close'
...im-data/lazy/toggleterm.nvim/lua/toggleterm/terminal.lua:288: in function 'close'
...cal/nvim-data/lazy/toggleterm.nvim/lua/toggleterm/ui.lua:443: in function 'close_and_save_terminal_view'
.../Local/nvim-data/lazy/toggleterm.nvim/lua/toggleterm.lua:67: in function 'smart_toggle'
.../Local/nvim-data/lazy/toggleterm.nvim/lua/toggleterm.lua:297: in function 'toggle'
.../Local/nvim-data/lazy/toggleterm.nvim/lua/toggleterm.lua:270: in function 'toggle_command'
.../Local/nvim-data/lazy/toggleterm.nvim/lua/toggleterm.lua:425: in function <.../Local/nvim-data/lazy/toggleterm.nvim/lua/toggleterm.lua:425>
```

### Expected Behavior

There should be no error.

### Steps To Reproduce

1. Open toggleterm in the tab direction
2. Leave by `:bp`
3. Re-open toggleterm
4. Try to close toggleterm (via `:ToggleTerm`)

### Environment

```Markdown
- OS: Windows 11
- neovim version: NVIM v0.11.3
- Shell: pwsh
```

### Anything else?

_No response_