fix: InlineForm bind target uses app. prefix for sibling resolution

InlineForm is a child of VBox, Tabular is a sibling. Without app. prefix,
getWidgetById searches downward from InlineForm and never finds the sibling
Tabular, causing silent bind failure (no request, no error).

xls2ddl/tmpls.py

@@ -27,7 +27,7 @@ data_browser_tmpl = """
 		"wid":"self",
 		"event":"submit",
 		"actiontype":"script",
-		"target":"{{tblname}}_tbl",
+		"target":"app.{{tblname}}_tbl",
 		"script":"var tbl = bricks.getWidgetById('{{tblname}}_tbl', bricks.app.root); if(tbl) await tbl.render(params);"
 	}]
 },