fix(js/ts) Prevent while/if/switch from falsly matching as functions

[joshgoebel]

When adding support for detecting what appear to be class functions:

class Dog {
  bark(args) {
    loud = true
  }
}

...we seem to have missed that this also matches if, while, switch, etc... so those need to be coded as exceptions to the rule.

Changes

Adds an exception mode to catch these first before the function rule matches them.

Checklist

• Added markup tests, or they don't apply here because...
• Updated the changelog at CHANGES.md
• Added myself to AUTHORS.txt, under Contributors

[allejo]

• You're missing for
  

• Do we want to account for the following?
  

[joshgoebel]

Do we want to account for the following?

Is that even possible? If so that is DUMB. I don't think there is any way we can account for it. The whole point here is we don't have access to the context... we have to behave the same inside or outside of a class.

[allejo]

should the changelog entry and unit tests be updated as well before this is merged? otherwise, this looks good to me