style(Picker): improve text size adjust (#6205)

* style(Picker): improve text size adjust

* chore: remove text align center

* fix: snapsho

src/picker/index.less

@@ -87,16 +87,17 @@
     flex: 1;
     overflow: hidden;
     font-size: @picker-option-font-size;
-    text-align: center;
 
     &__wrapper {
       transition-timing-function: cubic-bezier(0.23, 1, 0.68, 1);
     }
 
     &__item {
-      padding: 0 5px;
+      display: flex;
+      align-items: center;
+      justify-content: center;
+      padding: 0 @padding-base;
       color: @picker-option-text-color;
-      -webkit-text-size-adjust: 100%; /* avoid iOS text size adjust */
 
       &--disabled {
         opacity: @picker-option-disabled-opacity;