Style/ReturnNilInPredicateMethodDefinition already recognizes implicit nil returns from predicates:

def foo?
  nil # ⚠️ existing offense: Return false instead of nil in predicate methods
end

This PR expands implicit nil detection to predicates with rescue and ensure blocks. New cases detected:

def foo?
  nil # ⚠️ new offense: Return false instead of nil in predicate methods
rescue
end

def foo?
  nil # ⚠️ new offense: Return false instead of nil in predicate methods
ensure
end

def foo?
rescue
  nil # ⚠️ new offense: Return false instead of nil in predicate methods
end

Before submitting the PR make sure the following are checked:

• The PR relates to only one subject with a clear title and description in grammatically correct, complete sentences.
• Wrote good commit messages.
• Commit message starts with [Fix #issue-number] (if the related issue exists).
• Feature branch is up-to-date with master (if not - rebase it).
• Squashed related commits together.
• Added tests.
• Ran bundle exec rake default. It executes all tests and runs RuboCop on its own code.
• Added an entry (file) to the changelog folder named {change_type}_{change_description}.md if the new code introduces user-observable changes. See changelog entry format for details.