fix: format currency value as float while grid upload

(cherry picked from commit 95f23b3adb)

frappe/public/js/frappe/form/grid.js

@@ -1011,6 +1011,7 @@ export default class Grid {
 				Int: (val) => cint(val),
 				Check: (val) => cint(val),
 				Float: (val) => flt(val),
+				Currency: (val) => flt(val),
 			};
 
 			// upload