fix(text): Change idealSize calculation

Ideal size of doc can not be used because in the case of using it for
boundingRect (which uses 0,0 as the upper-left corner) leads to the
clipping right side of RTL languages.

Fixed #1887.

src/chatlog/content/text.cpp

@@ -293,7 +293,7 @@ void Text::freeResources()
 QSizeF Text::idealSize()
 {
     if (doc)
-        return QSizeF(qMin(doc->idealWidth(), width), doc->size().height());
+        return doc->size();
 
     return size;
 }