Fix an incorrect autocorrect for Style/Alias

[koic]

This PR fixes the following incorrect autocorrection for Style/Alias when EncforcedStyle: prefer_alias_method and using alias with interpolated symbol argument:

$ cat example.rb
alias :"string#{interpolation}" :symbol

$ cat .rubocop.yml
Style/Alias:
  EnforcedStyle: prefer_alias_method

$ bundle exec rubocop -a --only Style/Alias
(snip)

Offenses:

example.rb:1:1: C: [Corrected] Style/Alias: Use alias_method instead of alias.
alias :"string#{interpolation}" :symbol
^^^^^
example.rb:1:14: F: Lint/Syntax: unexpected token tCOLON
(Using Ruby 3.2 parser; configure using TargetRubyVersion parameter, under AllCops)
alias_method :, :symbol
             ^

1 file inspected, 2 offenses detected, 1 offense corrected

$ cat example.rb
alias_method :, :symbol

$ ruby -c example.rb
example.rb: example.rb:1: syntax error, unexpected ',', expecting literal content or terminator or tSTRING_DBEG or tSTRING_DVAR (SyntaxError)
alias_method :, :symbol
              ^

---

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.