`Rails/SafeNavigation` needs `SafeAutoCorrect: false`

[corsonknowles]

Rails/SafeNavigation:
  ConvertTry: true
  SafeAutoCorrect: false

When ConvertTry is true, the autocorrect is unsafe (but worth doing!)

I'm sure the tradeoffs here were considered long ago, but it does seem like we've passed a threshold where ConvertTry can default to true (optionally) and more importantly SafeAutoCorrect should default to false.

Hopefully this change will help any lingering code bases get this over the line.