fix: FAB.Group subitems are accessibility focusable when collapsed (#4498)

Author: personalizedrefrigerator

example/src/Examples/FABExample.tsx

@@ -145,6 +145,7 @@ const FABExample = () => {
           <FAB.Group
             open={open}
             icon={open ? 'calendar-today' : 'plus'}
+            accessibilityLabel="Calendar FAB"
             toggleStackOnLongPress={toggleStackOnLongPress}
             actions={[
               { icon: 'plus', onPress: () => {} },

src/components/FAB/FABGroup.tsx

@@ -383,8 +383,9 @@ const FABGroup = ({
                 ]}
                 pointerEvents={open ? 'box-none' : 'none'}
                 accessibilityRole="button"
-                importantForAccessibility="yes"
-                accessible={true}
+                importantForAccessibility={open ? 'yes' : 'no-hide-descendants'}
+                accessibilityElementsHidden={!open}
+                accessible={open}
                 accessibilityLabel={accessibilityLabel}
               >
                 {it.label && (