feat: improve cursor

src/number-keyboard/index.less

@@ -34,6 +34,7 @@
     padding: @number-keyboard-close-padding;
     color: @number-keyboard-close-color;
     font-size: @number-keyboard-close-font-size;
+    cursor: pointer;
 
     &:active {
       background-color: @number-keyboard-key-active-color;
@@ -69,6 +70,7 @@
   line-height: @number-keyboard-key-height;
   text-align: center;
   vertical-align: middle;
+  cursor: pointer;
 
   &::after {
     border-width: @border-width-base @border-width-base 0 0;