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_39.part.js

@@ -1,15 +1,15 @@
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-b3J(d,e,f){var y,x,w=null,v=new B.a0(),u=new B.a0()
-u=new A.YI(v,u)
+b3T(d,e,f){var y,x,w=null,v=new B.a0(),u=new B.a0()
+u=new A.YM(v,u)
 u.bf(d,w,e,w)
 y=u.a
 x=v.r
 x.toString
 y.r=x
-v.r=A.boi(u)
+v.r=A.bov(u)
 return u},
-bmZ(d,e){var y
+bnb(d,e){var y
 A:{if("timePicker.hours"===e){y="Tunnid"
 break A}if("timePicker.minutes"===e){y="Minutid"
 break A}if("timePicker.seconds"===e){y="Sekundid"
@@ -23,38 +23,38 @@ break A}if("input.selectAll"===e){y="Vali k\xf5ik"
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-boi(d){return new A.aTf(d)},
-YI:function YI(d,e){var _=this
+bov(d){return new A.aTn(d)},
+YM:function YM(d,e){var _=this
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-aO2:function aO2(){},
-aTf:function aTf(d){this.a=d},
-a9J:function a9J(){}}
+aO8:function aO8(){},
+aTn:function aTn(d){this.a=d},
+a9N:function a9N(){}}
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-A.YI.prototype={
+A.YM.prototype={
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-x=y.z=new A.aO2()}return x},
+x=y.z=new A.aO8()}return x},
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-A.aO2.prototype={
+A.aO8.prototype={
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 gbg(){return"Kopeeri"},
 gbi(){return"Kleebi"},
 gbe(){return"Vali k\xf5ik"}}
-A.a9J.prototype={}
+A.a9N.prototype={}
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-A.aTf.prototype={
-$1(d){return A.bmZ(this.a,d)},
+A.aTn.prototype={
+$1(d){return A.bnb(this.a,d)},
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-x(A.a9J,B.a_)
-x(A.YI,A.a9J)
-x(A.aO2,B.aZ)
-x(A.aTf,B.aR)
-y(A.a9J,B.aX)})()
-B.b3(b.typeUniverse,JSON.parse('{"YI":{"a_":[]}}'))};
-(a=>{a["qo+X+AU6i7VxsHMFvgZFTjuknEA="]=a.current})($__dart_deferred_initializers__);
+x(A.a9N,B.a_)
+x(A.YM,A.a9N)
+x(A.aO8,B.aZ)
+x(A.aTn,B.aR)
+y(A.a9N,B.aX)})()
+B.b4(b.typeUniverse,JSON.parse('{"YM":{"a_":[]}}'))};
+(a=>{a["1+Ocq/00YranA1UfIKWjdJp19is="]=a.current})($__dart_deferred_initializers__);