Merge pull request #11935 from dbeaver/stream-mapping-dialog-fit-fix#11927

#11927 Fix tree empty space fit

plugins/org.jkiss.dbeaver.data.transfer.ui/src/org/jkiss/dbeaver/tools/transfer/ui/pages/stream/StreamConsumerPageSettings.java

@@ -409,7 +409,7 @@ public class StreamConsumerPageSettings extends ActiveWizardPage<DataTransferWiz
             UIUtils.asyncExec(() -> {
                 viewer.setInput(mappings);
                 viewer.expandAll(true);
-                UIUtils.packColumns(viewer.getTree(), false, new float[]{0.75f, 0.25f});
+                UIUtils.packColumns(viewer.getTree(), true, new float[]{0.75f, 0.25f});
                 updateCompletion();
             });