[CI] Drop SearchAnchor

[lyskouski]

After upgrade to 5.16

Bad state: Too many elements
main.dart.js:70288     at Object.wrapException (https://lyskouski.github.io/app-finance/main.dart.js:10474:43)
main.dart.js:70288     at JavaScriptObject.get$single (https://lyskouski.github.io/app-finance/main.dart.js:96520:15)
main.dart.js:70288     at ScrollAction.invoke$2 (https://lyskouski.github.io/app-finance/main.dart.js:225956:32)
main.dart.js:70288     at _OverridableContextAction.invokeDefaultAction$3 (https://lyskouski.github.io/app-finance/main.dart.js:202090:19)
main.dart.js:70288     at _OverridableContextAction.invoke$2 (https://lyskouski.github.io/app-finance/main.dart.js:202020:39)
main.dart.js:70288     at _OverridableContextAction._invoke$2 (https://lyskouski.github.io/app-finance/main.dart.js:201594:22)
main.dart.js:70288     at PrioritizedAction.invoke$2 (https://lyskouski.github.io/app-finance/main.dart.js:202003:10)
main.dart.js:70288     at PrioritizedAction._invoke$2 (https://lyskouski.github.io/app-finance/main.dart.js:201594:22)
main.dart.js:70288     at ActionDispatcher.invokeActionIfEnabled$3 (https://lyskouski.github.io/app-finance/main.dart.js:201632:45)
main.dart.js:70288     at ShortcutManager.handleKeypress$2 (https://lyskouski.github.io/app-finance/main.dart.js:228198:23)

1: wrapException(ex) {
      return A.initializeExceptionWrapper(new Error(), ex); // !
    },

2: get$single(receiver) {
      var t1 = receiver.length;
      if (t1 === 1)
        return receiver[0];
      if (t1 === 0)
        throw A.wrapException(A.IterableElementError_noElement());
      throw A.wrapException(A.IterableElementError_tooMany()); // !
    },

3: invoke$2(intent, context) {
      var state, t1, t2, increment;
      context.toString;
      state = A.Scrollable_maybeOf(context);
      if (state == null) {
        t1 = A.PrimaryScrollController_maybeOf(context)._positions;
        t2 = B.JSArray_methods.get$single(t1); // !

4: invokeDefaultAction$3(intent, fromAction, context) {
      var t1 = this.defaultAction;
      if (fromAction == null)
        return t1.invoke$2(intent, context); // !

5: _invoke$2(intent, context) {
      var _this = this;
      if (A._instanceType(_this)._eval$1("ContextAction<Action.T>")._is(_this))
        return _this.invoke$2(intent, context); // !

...

end: handleKeypress$2(context, $event) {
      var t1, primaryContext, action, _0_0, _0_1, _0_2, enabled, invokeResult, _null = null,
        matchedIntent = this._find$2($event, $.$get$RawKeyboard_instance());
      if (matchedIntent != null) {
        t1 = $.WidgetsBinding__instance.WidgetsBinding__buildOwner.focusManager._primaryFocus;
        primaryContext = t1 == null ? _null : t1._context;
        if (primaryContext != null) {
          action = A.Actions_maybeFind(primaryContext, matchedIntent, type$.Intent);
          if (action != null) {
            primaryContext.dependOnInheritedWidgetOfExactType$1$0(type$._ActionsScope);
            t1 = A.Actions__findDispatcher(primaryContext);
            _0_0 = t1.invokeActionIfEnabled$3(action, matchedIntent, primaryContext); // !

Remark:

• SearchController.closeView failure on PWA after upgrade to 3.16.0 flutter/flutter#138880