zsh completions don't work for former token

[leoheitmannruiz]

brew doctor output

Your system is ready to brew.

Verification

• My "brew doctor output" above says Your system is ready to brew. and am still able to reproduce my issue.
• I ran brew update twice and am still able to reproduce my issue.
• This issue's title and/or description do not reference a single formula e.g. brew install wget. If they do, open an issue at https://github.com/Homebrew/homebrew-core/issues/new/choose instead.

brew config output

HOMEBREW_VERSION: 4.5.4-28-g0c4672a
ORIGIN: https://github.com/Homebrew/brew
HEAD: 0c4672a323eda49f932fd7aec6a45abf72ae1806
Last commit: 3 hours ago
Branch: master
Core tap JSON: 05 Jun 18:37 UTC
Core cask tap HEAD: ec172d4f7632a86973a9bb3de78f558a3bc2f5bc
Core cask tap last commit: 2 hours ago
Core cask tap JSON: 05 Jun 18:37 UTC
HOMEBREW_PREFIX: /opt/homebrew
HOMEBREW_CASK_OPTS: []
HOMEBREW_EDITOR: nvim
HOMEBREW_MAKE_JOBS: 8
HOMEBREW_NO_COLOR: set
HOMEBREW_NO_ENV_HINTS: set
HOMEBREW_SORBET_RUNTIME: set
Homebrew Ruby: 3.4.4 => /opt/homebrew/Library/Homebrew/vendor/portable-ruby/3.4.4/bin/ruby
CPU: octa-core 64-bit arm_blizzard_avalanche
Clang: 17.0.0 build 1700
Git: 2.49.0 => /opt/homebrew/bin/git
Curl: 8.7.1 => /usr/bin/curl
macOS: 15.5-arm64
CLT: 16.4.0.0.1.1747106510
Xcode: N/A
Rosetta 2: false

What were you trying to do (and why)?

The cask mullvad-vpn was recently renamed from mullvadpvn. On my end it currently looks like this:

$ brew list --cask | grep mullvad
mullvad-vpn
mullvadvpn

Out of curiosity I wanted to see what brew info mullvadvpn says.

What happened (include all command output)?

I typed brew info mullvadv<TAB> and nothing happened.

What did you expect to happen?

I expected mullvadvpn to be completed.

Step-by-step reproduction instructions (by running brew commands)

Assuming `brew list` shows `mullvadvpn` and `mullvad-vpn`:

`brew info mullvadv<TAB>`