chore(page-controller): remove accidental debug console.log calls

Two debug log statements were left in production code:

- `isScrollableElement()` logged `scrollData!!!` for every scrollable
  element found during DOM tree construction. Because the DOM is rebuilt
  on every agent action, this fired repeatedly and also triggered
  unnecessary JSON serialisation of scroll metrics on the hot path.

- `SimulatorMask.dispose()` logged 'dispose SimulatorMask' every time
  the highlight overlay was torn down.

Neither had a structured prefix or was gated behind a debug flag.
Removing both silences console noise for end users and removes the
serialisation overhead in the scroll-detection hot path.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

packages/page-controller/src/dom/dom_tree/index.js

@@ -552,8 +552,6 @@ export default (
 			scrollData: scrollData,
 		})
 
-		console.log('scrollData!!!', scrollData)
-
 		return scrollData
 	}
 

packages/page-controller/src/mask/SimulatorMask.ts

@@ -209,7 +209,6 @@ export class SimulatorMask extends EventTarget {
 
 	dispose() {
 		this.#disposed = true
-		console.log('dispose SimulatorMask')
 		this.motion?.dispose()
 		this.wrapper.remove()
 		this.dispatchEvent(new Event('dispose'))