New Issue Checklist

• Updated SwiftLint to the latest version
• I searched for existing GitHub issues

Describe the bug

With #4583 the rule change - I think in an unindented way:

I think @jpsim thought that it broke for all decimals (e.g. like line one behaved like line 3) - however the refactoring from 0.50.0 actually only seems to impact the parsing of the colorLiteral.

Additionally, I think the error on Date(timeIntervalSince1970: 1_497_078_000) could be improved, it currently says Underscores should be used as thousand separator in large decimal numbers. (number_separator) - would be nice if that is negated if we enforce no _ for decimals.

Environment

• SwiftLint version (run swiftlint version to be sure)? see above
• Installation method used (Homebrew, CocoaPods, building from source, etc)? portable from GitHub releases
• Paste your configuration file:

opt_in_rules:
  - number_separator

• Are you using nested configurations? no
• Which Xcode version are you using (check xcodebuild -version)? 14.1
• Do you have a sample that shows the issue? Run echo "[string here]" | swiftlint lint --no-cache --use-stdin --enable-all-rules
  to quickly test if your example is really demonstrating the issue. If your example is more
  complex, you can use swiftlint lint --path [file here] --no-cache --enable-all-rules. see above