QToolButton: Elide text when constraints prevent from showing whole text

Follow-up of b2a282d7c7 - elide the text
also when the QToolButton has no icon (=text only)

Pick-to: 6.5 6.4 6.2 5.15
Fixes: QTBUG-64132
Change-Id: If4d3758452f37df411931a6628846988a3418d8e
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@qt.io>

src/widgets/styles/qcommonstyle.cpp

@@ -1668,8 +1668,9 @@ void QCommonStyle::drawControl(ControlElement element, const QStyleOption *opt,
                     alignment |= Qt::TextHideMnemonic;
                 rect.translate(shiftX, shiftY);
                 p->setFont(toolbutton->font);
+                const QString text = d->toolButtonElideText(toolbutton, rect, alignment);
                 proxy()->drawItemText(p, rect, alignment, toolbutton->palette,
-                             opt->state & State_Enabled, toolbutton->text,
+                             opt->state & State_Enabled, text,
                              QPalette::ButtonText);
             } else {
                 QPixmap pm;