feat: 为划转页面账户卡片添加位置互换动画

- 移除按钮旋转动画，保持按钮静止
- 两个账户卡片（从/到）平滑互换位置
- 使用 AnimatedSwitcher + FadeTransition + SlideTransition
- 动画时长 300ms，easeOut 曲线
- 上方卡片向上滑出，下方卡片向下滑入
- 视觉效果更流畅自然

flutter_monisuo/build/web/main.dart.js_42.part.js

@@ -1,15 +1,15 @@
 ((a,b)=>{a[b]=a[b]||{}})(self,"$__dart_deferred_initializers__")
 $__dart_deferred_initializers__.current=function(a,b,c,$){var B,A={
-b3L(d,e,f){var y,x,w=null,v=new B.a0(),u=new B.a0()
-u=new A.YK(v,u)
+b3V(d,e,f){var y,x,w=null,v=new B.a0(),u=new B.a0()
+u=new A.YO(v,u)
 u.bf(d,w,e,w)
 y=u.a
 x=v.r
 x.toString
 y.r=x
-v.r=A.bog(u)
+v.r=A.bot(u)
 return u},
-bmX(d,e){var y
+bn9(d,e){var y
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 break A}if("timePicker.seconds"===e){y="\u062b\u0627\u0646\u06cc\u0647"
@@ -23,38 +23,38 @@ break A}if("input.selectAll"===e){y="\u0627\u0646\u062a\u062e\u0627\u0628 \u0647
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 break A}y=null
 break A}return y},
-bog(d){return new A.aTd(d)},
-YK:function YK(d,e){var _=this
+bot(d){return new A.aTl(d)},
+YO:function YO(d,e){var _=this
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 _.z=_.w=$
 _.a=e
 _.e=_.b=$},
-aO4:function aO4(){},
-aTd:function aTd(d){this.a=d},
-a9L:function a9L(){}}
+aOa:function aOa(){},
+aTl:function aTl(d){this.a=d},
+a9P:function a9P(){}}
 B=c[0]
 A=a.updateHolder(c[22],A)
-A.YK.prototype={
+A.YO.prototype={
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-x=y.z=new A.aO4()}return x},
+x=y.z=new A.aOa()}return x},
 gb9(){return this.r}}
-A.aO4.prototype={
+A.aOa.prototype={
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 gbe(){return"\u0627\u0646\u062a\u062e\u0627\u0628 \u0647\u0645\u0647"}}
-A.a9L.prototype={}
+A.a9P.prototype={}
 var z=a.updateTypes([])
-A.aTd.prototype={
-$1(d){return A.bmX(this.a,d)},
+A.aTl.prototype={
+$1(d){return A.bn9(this.a,d)},
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-x(A.a9L,B.a_)
-x(A.YK,A.a9L)
-x(A.aO4,B.aZ)
-x(A.aTd,B.aR)
-y(A.a9L,B.aX)})()
-B.b3(b.typeUniverse,JSON.parse('{"YK":{"a_":[]}}'))};
-(a=>{a["JttN1cb6Nc1TZWRBFKJae4Ke2dk="]=a.current})($__dart_deferred_initializers__);
+x(A.a9P,B.a_)
+x(A.YO,A.a9P)
+x(A.aOa,B.aZ)
+x(A.aTl,B.aR)
+y(A.a9P,B.aX)})()
+B.b4(b.typeUniverse,JSON.parse('{"YO":{"a_":[]}}'))};
+(a=>{a["Vaa3cbRd5VvZGH07JqvkvXQLQ48="]=a.current})($__dart_deferred_initializers__);