Fix crash on collapsible click

src/components/Animations/AnimatedAccordion.js

   }
 
   setupChevron() {
-    const {state} = this;
-    if (state.expanded) {
+    const {expanded} = this.state;
+    if (expanded) {
       this.chevronIcon = 'chevron-up';
       this.animStart = '180deg';
       this.animEnd = '0deg';
   }
 
   toggleAccordion = () => {
-    const {state} = this;
+    const {expanded} = this.state;
     if (this.chevronRef.current != null) {
       this.chevronRef.current.transitionTo({
-        rotate: state.expanded ? this.animStart : this.animEnd,
+        rotate: expanded ? this.animStart : this.animEnd,
       });
-      this.setState({expanded: !state.expanded});
+      this.setState((prevState: StateType): {expanded: boolean} => ({
+        expanded: !prevState.expanded,
+      }));
     }
   };
 
         <List.Item
           title={props.title}
           subtitle={props.subtitle}
-          titleStyle={state.expanded ? {color: colors.primary} : undefined}
+          titleStyle={state.expanded ? {color: colors.primary} : null}
           onPress={this.toggleAccordion}
           right={({size}: {size: number}): React.Node => (
             <AnimatedListIcon
               ref={this.chevronRef}
               size={size}
               icon={this.chevronIcon}
-              color={state.expanded ? colors.primary : undefined}
+              color={state.expanded ? colors.primary : null}
               useNativeDriver
+              style={{rotate: '0deg'}}
             />
           )}
           left={props.left}

src/components/Lists/PlanexGroups/GroupListAccordion.js

           }
           unmountWhenCollapsed // Only render list if expanded for increased performance
           opened={props.item.id === 0 || props.currentSearchString.length > 0}>
-          {/* $FlowFixMe */}
           <FlatList
             data={this.getData()}
             extraData={props.currentSearchString}