tdf#123772 UnoControlDialogModel: Don't ignore property "Sizeable"

which is supposed to make the dialog resizable, but was silently ignored.

Change-Id: Ifa2d2ea70c769f7785ac044ab2b681802c54bc17
Reviewed-on: https://gerrit.libreoffice.org/68515
Tested-by: Jenkins
Reviewed-by: Samuel Mehrbrodt <Samuel.Mehrbrodt@cib.de>
(cherry picked from commit e55c7ff6)
Reviewed-on: https://gerrit.libreoffice.org/68528Reviewed-by: Thorsten Behrens <Thorsten.Behrens@CIB.de>

toolkit/source/controls/unocontrol.cxx

@@ -1163,6 +1163,16 @@ void UnoControl::createPeer( const Reference< XToolkit >& rxToolkit, const Refer
             aDescr.WindowAttributes |= WindowAttribute::MOVEABLE;
     }
 
+    // Sizeable
+    aPropName = GetPropertyName( BASEPROPERTY_SIZEABLE );
+    if ( xInfo->hasPropertyByName( aPropName ) )
+    {
+        aVal = xPSet->getPropertyValue( aPropName );
+        bool b = bool();
+        if ( ( aVal >>= b ) && b)
+            aDescr.WindowAttributes |= WindowAttribute::SIZEABLE;
+    }
+
     // Closeable
     aPropName = GetPropertyName( BASEPROPERTY_CLOSEABLE );
     if ( xInfo->hasPropertyByName( aPropName ) )