[BUGFIX LTS] Controller queryParams are readonly

[wagenet]

• Update DefinitelyTyped

[chriskrycho]

Blergh, I realized after approving this when looking at the DT PR that this doesn't actually help us: this change doesn't actually make queryParams be a ReadonlyArray, since subclasses can make it a regular array—and in fact that's what we're doing explicitly in the tests here. 😩 So we should revert this.

playground

[wagenet]

All I wanted was for it to allow Readonly object to be passed in for queryParams, e.g. queryParams = Object.freeze({ ... })

[chriskrycho]

I'm noting this one for back-port to LTS as well as beta and stable.