investigate mise ls with rust active flag

[jdx]

from @hverlin in discord:

Quick question: if using rust with mise, what's the expected value for active?

dev@ubuntu2:~/Documents/rust-project$ mise ls --current
Tool       Version           Source                              Requested 
node       23.5.0            ~/Documents/rust-project/mise.toml  latest
rust       1.83.0 (symlink)  ~/Documents/rust-project/mise.toml  latest

Currently, it will show active: false. I would expect it to be true.
Is this the expected behavior for symlinked tools?

dev@ubuntu2:~/Documents/rust-project$ mise ls --json | jq .rust
[
  {
    "version": "1.83.0",
    "requested_version": "latest",
    "install_path": "/home/dev/.local/share/mise/installs/rust/1.83.0",
    "source": {
      "type": "mise.toml",
      "path": "/home/dev/Documents/rust-project/mise.toml"
    },
    "symlinked_to": "/home/dev/.local/share/mise/installs/rust/1.83.0",
    "installed": true,
    "active": false
  }
]