remove grey bg on password reveal eye btn

customize.dist/src/less2/include/password-input.less

@@ -1,3 +1,4 @@
+@import (reference) "./colortheme-all.less";
 .password_main() {
     --LessLoader_require: LessLoader_currentFile();
 }
@@ -17,7 +18,7 @@
             justify-content: center;
             cursor: pointer;
             &:hover {
-                background-color: rgba(0,0,0,0.1);
+                color: darken(@colortheme_alertify-primary, 10%);
             }
         }
     }