Map sending keys to active element for W3C compatibility

[mykola-mokhnach]

Change list

Map sendKeysToActiveElement to W3C actions. Previously calling keyboard.sendKeys would throw an exception, since W3C standard does not declare sendKeysToActiveElement endpoint.

Types of changes

• No changes in production code.
• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

[SrinivasanTarget]

LGTM. Does UIA2 or XCUI or Espresso Driver has this endpoint?

[mykola-mokhnach]

UIA2 and Espresso do have it.

XCUITest driver does not, since XCTest itself does not support generation of arbitrary key events (yet).