Editor: do not split on nbsp in rewrap paragraph

Change-Id: I443400056f647a58a98d9bb6a221b10852470ba2
Fixes: QTCREATORBUG-23643
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

src/plugins/texteditor/texteditor.cpp

@@ -7165,7 +7165,7 @@ void TextEditorWidget::rewrapParagraph()
     QString currentWord;
 
     for (const QChar &ch : qAsConst(selectedText)) {
-        if (ch.isSpace()) {
+        if (ch.isSpace() && ch != QChar::Nbsp) {
             if (!currentWord.isEmpty()) {
                 currentLength += currentWord.length() + 1;