Prevent users from uninstalling casks with dependents

[botantony]

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Closes #21067

[Copilot]

Pull Request Overview

This pull request implements functionality to prevent users from uninstalling casks that have dependent casks installed, similar to the existing behavior for formulae.

Key changes:

• Extracted DependentsMessage class to a shared module for reuse between formula and cask uninstall operations
• Added check_dependent_casks method to verify cask dependencies before uninstallation
• Integrated the dependency check into the cask uninstall command workflow

Reviewed Changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
Library/Homebrew/dependents_message.rb	New shared class extracted from uninstall.rb to format and display dependency error messages with Sorbet type signatures
Library/Homebrew/uninstall.rb	Removed the DependentsMessage class (now in separate file) and added require statement for the new module
Library/Homebrew/cask/uninstall.rb	Added check_dependent_casks method to identify and report casks with dependencies before uninstallation
Library/Homebrew/cmd/uninstall.rb	Integrated the dependency check into the uninstall command flow, halting execution if dependencies are found
Library/Homebrew/test/cask/uninstall_spec.rb	Added comprehensive test coverage for the new dependency checking functionality, including single/multiple casks and dependents

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[Rylan12]

Nice!

[MikeMcQuaid]

Thanks @botantony!