feat!: treat navigateToWebContent same as other guidepup methods

[cmorten]

Issue

No issue

Details

Currently .navigateToWebContent() behaves differently to other Guidepup commands.

This is a breaking change to update the interface to start taking an options argument, to align the interface and behaviour, starting with support for the capture flag:

• When true the full spoken phrase of the final command to place the screen reader cursor on the first item of the web content is captured in full
• When "initial" the initial spoken phrase of the final command to place the screen reader cursor on the first item of the web content is captured
• When false no spoken phrases are captured

CheckList

• Has been tested (where required).