fix(clickblock): clickblock applies longer

references #9531

src/themes/ionic.globals.scss

@@ -34,7 +34,7 @@ $hairlines-width: .55px !default;
 $z-index-menu-overlay:           80;
 $z-index-menu-backdrop:          79;
 $z-index-overlay:                1000;
-$z-index-click-block:            9999;
+$z-index-click-block:            99999;
 
 $z-index-fixed-content:          999;
 $z-index-scroll-content:         1;

src/themes/util.scss

@@ -48,6 +48,10 @@ ion-input :focus {
 // to avoid full-page reflows and paints which can cause flickers
 
 .click-block {
+  display: none;
+}
+
+.click-block-enabled {
   position: absolute;
   top: 0;
   right: 0;
@@ -61,6 +65,7 @@ ion-input :focus {
 
   // background: red;
   // opacity: .3;
+  contain: strict;
 }
 
 .click-block-active {