Support fps and showActions in recordVideo of New Context #5346

Describe the change
RecordVideo declares only dir and size. Robot Framework's argument conversion rejects keys a TypedDict does not declare, so New Context and New Persistent Context fail when recordVideo contains Playwright's fps or showActions options:

ValueError: Argument 'recordVideo' got value '{'fps': 10}' (dictionary) that cannot be converted to RecordVideo or None.

RecordVideo gets the Playwright 1.64 shape:

• fps: frame rate of the recorded videos.
• showActions: visual annotations on interacted elements, with duration, position (top-left, top, top-right, bottom-left, bottom, bottom-right), cursor (none, pointer) and style (point, highlight, title).

The deprecated showActions.fontSize is not declared; use style.title instead.

Release notes
New Context and New Persistent Context accept fps and showActions in recordVideo. Example:

New Context    recordVideo={'showActions': {'position': 'bottom', 'style': {'title': 'font-size: 32px'}}}

showActions.fontSize is not supported; use showActions.style.title, for example 'title': 'font-size: 32px'.

Found while reviewing #5326 (adopted context recording options), where the Electron library passes showActions through adopted_context_options.