feat: Modify the z-index of Toaster

Author: luoxiaozero

thaw/src/toast/toaster.css

@@ -1,5 +1,5 @@
 div.thaw-toaster-wrapper {
-    z-index: 2001;
+    z-index: 2050;
     position: absolute;
     top: 0px;
     left: 0px;