feat(Stepper): add always-embed prop (#4678)

packages/stepper/README.md

@@ -137,6 +137,7 @@ Page({
 | disable-plus | 是否禁用增加按钮 | _boolean_ | - |
 | disable-minus | 是否禁用减少按钮 | _boolean_ | - |
 | long-press | 是否开启长按手势 | _boolean_ | `true` |
+| always-embed `v1.9.3` | 强制 input 处于同层状态，默认 focus 时 input 会切到非同层状态 (仅在 iOS 下生效) |  _boolean_ | `false` |
 
 ### Events
 

packages/stepper/index.ts

@@ -67,6 +67,7 @@ VantComponent({
       value: true,
     },
     theme: String,
+    alwaysEmbed: Boolean,
   },
 
   data: {

packages/stepper/index.wxml

@@ -22,6 +22,7 @@
     value="{{ currentValue }}"
     focus="{{ focus }}"
     disabled="{{ disabled || disableInput }}"
+    always-embed="{{ alwaysEmbed }}"
     bindinput="onInput"
     bind:focus="onFocus"
     bind:blur="onBlur"