brew bundle dump needs updating for new mas list format

[emilazy]

brew config output

HOMEBREW_VERSION: 3.1.3-107-g1157a97
ORIGIN: https://github.com/Homebrew/brew
HEAD: 1157a97d8be039db16e1c0bff5a48d372696c5a9
Last commit: 10 hours ago
Core tap ORIGIN: https://github.com/Homebrew/homebrew-core
Core tap HEAD: d9a1a62c7400b4cc3610b9ee65bba71e7dd7e880
Core tap last commit: 28 minutes ago
Core tap branch: master
HOMEBREW_PREFIX: /usr/local
HOMEBREW_CASK_OPTS: []
HOMEBREW_EDITOR: kak
HOMEBREW_MAKE_JOBS: 16
Homebrew Ruby: 2.6.3 => /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/bin/ruby
CPU: 16-core 64-bit kabylake
Clang: 12.0 build 1205
Git: 2.30.1 => /Applications/Xcode.app/Contents/Developer/usr/bin/git
Curl: 7.64.1 => /usr/bin/curl
macOS: 11.3-x86_64
CLT: N/A
Xcode: 12.5

brew doctor output

Your system is ready to brew.

• I ran brew update and am still able to reproduce my issue.
• I have resolved all warnings from brew doctor and that did not fix my problem.

What were you trying to do (and why)?

As of mas-cli/mas#339, mas list gives a formatted list:

emily@yuyuko ~> mas list
1440147259  AdGuard for Safari       (1.9.13)
497799835   Xcode                    (12.5)
425424353   The Unarchiver           (4.3.1)

This confuses brew, which is expecting a format without all the whitespace padding and includes it in the brew bundle dump output. This will affect people who use brew's mas integration once a new mas release is cut, which will likely be soon as it fixes the unnecessary upgrade problems many people were having (indeed, I discovered this after building and installing the latest source from HEAD to fix this issue on my system).

What happened (include all command output)?

emily@yuyuko ~> brew bundle dump --file=- | rg '^mas'
mas "1Password 7             ", id: 1333542190
mas "AdGuard for Safari      ", id: 1440147259
mas "Affinity Photo          ", id: 824183456
…

What did you expect to happen?

mas "1Password 7", id: 1333542190
mas "AdGuard for Safari", id: 1440147259
mas "Affinity Photo", id: 824183456
…

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

# Install mas from git, e.g. with `brew install --HEAD` or cloning the repository and `script/install $prefix`
$ brew bundle dump

[emilazy]

Moving this to Homebrew/homebrew-bundle#952.