Get page context (#1953)

* Only run in the sidebar

* Add to the windows bundle

* Add duck-ai-listener to windows

* Add replaceState listener

* Move to non-isolated so we can listen to URL changes

* Detect duck.ai better

* Ignore URL listeners for frames and duckai

* Ignore duck:// urls for collection

* Remove error

* Move logging

* lint fix

* Add visibilitychange listener

* Remove collect subscription

* Clean up mutation listener to stop after cache is gone, simplify cache logic

* Convert text content to simple markdown representation

* Add remote config wrappers

* Truncate page context at the node collection and add flag
Add truncation in page warning.

* Add prompt explict markers

* Clean up

* Ensure mutation observer is initialized correctly

* Rename message bridge logger

* Remove arg

* Change prompt a little

* Lint fixes

* Fix unit test not to be hardcoded

* Add explicit consent messaging

* Split out messaging

* Add context info pixel

* Invalidate cache on collect

* Dedupe invalidate

* Move pixel send

* Handle reset state better

* Consume text box value on send

* Add null handling for getPageContext

* Remove context chip on null

* Add togglePageContextTelemetry message

* Handle content coming from either get or subscribe. Ensure toggle state reflects reality

* Clean up

* Add telemetry

* Lint fix

* Add hasContextBeenUsed back in

* Add back in tooltip

* Add prompt cleaner

* Expand telemetry

* Ensure hasContextBeenUsed is after input events

* Change bucket sizes

* Lint fix

* Lower max limit

* Make size categories remote configurable

* Truncate long title

Author: jonathanKingston