Flag scoped service path helpers

[MikeMcQuaid]

• Keep service DSL helper use consistent after Service includes Utils::Path.
• Leave class-level formula DSL blocks using the scoped form because the bare helper is not available there.

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[Copilot]

Pull request overview

This PR updates the RuboCop::Cop::Homebrew::FormulaPathMethods cop to specifically flag and autocorrect Utils::Path.* “scoped” formula path helper calls when they appear inside service do ... end blocks, keeping service DSL usage consistent now that Service includes Utils::Path.

Changes:

• Extend the cop to detect Utils::Path.formula_* helper calls within service blocks and autocorrect them to the unscoped helper form.
• Add RSpec coverage to assert the new offense/correction behavior in service blocks and a non-offense case outside them.
• Update the Sorbet RBI for newly introduced node matcher helpers.

Reviewed changes

Copilot reviewed 2 out of 3 changed files in this pull request and generated 1 comment.

File	Description
Library/Homebrew/rubocops/formula_path_methods.rb	Adds service-block detection and scoped-helper handling to drive the new offense/autocorrect behavior.
Library/Homebrew/test/rubocops/formula_path_methods_spec.rb	Adds tests covering the new service-block offense/correction and a negative case outside service blocks.
Library/Homebrew/sorbet/rbi/dsl/rubo_cop/cop/homebrew/formula_path_methods.rbi	Declares the new node matcher helpers for Sorbet.

Files not reviewed (1)

• Library/Homebrew/sorbet/rbi/dsl/rubo_cop/cop/homebrew/formula_path_methods.rbi: File type not supported

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[github-actions]

Automated approval by github-actions[bot] for #22858 because all requirements are met:

• #22858 is not from a fork.
• #22858 is not a draft.
• The approval workflow is running on a weekday.
• @MikeMcQuaid is listed as a lead maintainer in README.md.
• @MikeMcQuaid approved Homebrew/brew PR #22888 in the last 7 days.
• #22858 was created at least 48 hours ago and has had no human review since creation.
• Copilot has already reviewed #22858.
• #22858 does not modify .github/ or other sensitive files.
• All CI jobs are passing, including non-required jobs.