Accept Word does not work across lines

[isidorn]

Testing #172029

Currently my top pain point with using Accept Word in inline suggestions is that it does not go across lines. Once I get to the end of line I can not trigger it anymore to start accepting words from the second line.

fyi @jrieken

[hediet]

Fixing this bug requires some re-architecturing:
As soon as the cursor changes the line, the session is being thrown away and new inline completions are asked for the new line.