The effect of the soft-hyphen needs to be updated once the final the
break point has been found.
This change cleans the logic by using two variables keeping track of
soft-hyphen at current evaluated position and at last confirmed break
point. Also adds tests for supression of soft-hyphens in the tight
WrapAnywhere case.
Fixes: QTBUG-35940
Fixes: QTBUG-44257
Change-Id: I7a89a8ef991b87691879bb7ce40cec4a3605fdd5
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>
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