Fix a couple of minor issues related to the casting VM

[object-Object]

• Avoid changing the paren count when removing regular patterns with Evanition (fix Evanition doesn't quite work right. It erases, but also ends the introspection #623)
  
• Fix escapes carrying over to subsequent Thoth iterations or out of the Thoth entirely
  
  

[Talia-12]

The double copy of newImage.withResetEscape().copy(stack = tStack) is mildly unideal, might be better to allow the withResetEscape method to accept args like stack so you can do newImage.withResetEscape(stack = tStack) and pass that through to the copy inside withResetEscape so you only copy once? no idea if that is actually possible to do

[object-Object]