fix(playwright): fractional clicks, geolocation accuracy, stale frames, wire headers and console handles - #464

Running a long script assembled from public Playwright examples on pydoll.playwright surfaced five gaps against Playwright 1.63:

• Mouse coordinates were rounded to whole pixels, so a 1x1 target at a fractional offset (TodoMVC's toggle-all checkbox) was missed by check().
• Emulation.setGeolocationOverride without an accuracy makes Chrome answer POSITION_UNAVAILABLE; the context option and set_geolocation() now default it to 0 like Playwright.
• Chrome does not announce the child frames of a document that a navigation replaced, so page.frames kept listing iframes from the previous page; a frame navigation now detaches its known descendants.
• requestWillBeSentExtraInfo and responseReceivedExtraInfo were ignored, so all_headers(), header_value(), header_values() and headers_array() missed cookie and set-cookie; headers stays provisional like Playwright.
• Console arguments passed by value used a private stand-in the sync facade never wrapped, so args[0].json_value() returned a coroutine; they now come from the frame's handle factory, and ConsoleMessage.text previews plain objects and arrays instead of printing Object.

Each fix carries an integration test.

Summary by CodeRabbit

• Bug Fixes
  • Mouse interactions now preserve fractional coordinates for more precise targeting.
  • Geolocation overrides work when accuracy is omitted, while honoring an explicitly supplied accuracy.
  • Console messages display object and array previews more reliably.
  • Network header accessors include browser-added headers and correctly separate multiple values.
  • Frame lists now reflect child frames being detached during navigation and updated when new frames load.