style: autocorrect rubocop offenses in appengine and jobs samples

[torreypayne]

Fixes Rubocop errors reported in presubmit:

• appengine/rails-hello_world/bin/setup: Style/MethodDefParentheses
• appengine/standard-static-files/rails/bin/setup: Style/MethodDefParentheses
• appengine/static_files/rails/bin/setup: Style/MethodDefParentheses
• jobs/V3/filter_search_sample.rb: Layout/IndentationWidth, Layout/ClosingParenthesisIndentation

Autocorrected via Rubocop CLI (bundle exec rubocop -a).

[gemini-code-assist]

Code Review

This pull request removes parentheses from the system! method definition in several setup scripts and adjusts the indentation of the max_compensation parameter in jobs/V3/filter_search_sample.rb. The review feedback correctly points out that this indentation change introduces a layout inconsistency relative to the sibling min_compensation parameter and suggests a uniform formatting structure for better readability.

[gemini-code-assist]

The auto-correction of max_compensation has introduced a significant layout inconsistency. While max_compensation is now indented with 4 spaces, its sibling argument min_compensation (on line 238) remains indented with 51 spaces.

To maintain readability and consistency, it is highly recommended to format both arguments of jobs::CompensationRange.new uniformly. For example, you can wrap the arguments in standard parentheses and format them like this:

  compensation_range = jobs::CompensationRange.new(
    max_compensation: jobs::Money.new(
      currency_code: "USD",
      units:         max_unit,
      nanos:         500_000_000
    ),
    min_compensation: jobs::Money.new(
      currency_code: "USD",
      units:         min_unit,
      nanos:         0
    )
  )

[aandreassa]

Please fix!

[aandreassa]

Lets also use chore just in case. Not sure what style does.