`right_align` of `renderer`'s `*_placement` renders 'after', not right aligned

[gegoune]

Description

Seems like 118057e has broken renderer.icons.git_placement = 'right_align' (and other `*_placement's too).

Neovim version

NVIM v0.12.0-dev-4371+g6bc0b8ae87-Homebrew
Build type: Release
LuaJIT 2.1.1770848219

Operating system and version

MacOS 15.7.3

Windows variant

No response

nvim-tree version

1df1960

Clean room replication

for name, url in pairs({
  tree = 'https://github.com/nvim-tree/nvim-tree.lua',
}) do
  local install_path = vim.fn.fnamemodify(string.format('/tmp/nvim_issue/%s', name), ':p')
  if vim.fn.isdirectory(install_path) == 0 then vim.fn.system({ 'git', 'clone', '--depth=1', url, install_path }) end
  vim.opt.runtimepath:append(install_path)
end

print('Minimal Config Ready!')

require('nvim-tree').setup({
  renderer = { icons = { git_placement = 'right_align' } },
})

Steps to reproduce

1. nvim -nu /tmp/nvt-min.lua
2. :NvimTreeOpen
3. navigate to any git repository with 'dirty' files

Expected behavior

Render git status icons on the right hand side edge of nvim-tree window.

Actual behavior

Icons render immediately after filename (with padding) instead.

[alex-courtis]

Good catch... my "hardening" broke it.