feat: add a11y labels to buttons

Author: CodingItWrong

src/Date/CalendarHeader.tsx

@@ -48,6 +48,7 @@ function CalendarHeader({
           >
             <IconButton
               icon="chevron-left"
+              accessibilityLabel="Previous"
               onPress={onPrev}
               // RN types bug
               hasTVPreferredFocus={undefined}
@@ -63,6 +64,7 @@ function CalendarHeader({
           >
             <IconButton
               icon="chevron-right"
+              accessibilityLabel="Next"
               onPress={onNext}
               // RN types bug
               hasTVPreferredFocus={undefined}

src/Date/DatePickerModalContentHeader.tsx

@@ -79,6 +79,9 @@ export default function DatePickerModalContentHeader(
       {allowEditing ? (
         <IconButton
           icon={collapsed ? 'pencil' : 'calendar'}
+          accessibilityLabel={
+            collapsed ? 'Type in date' : 'Pick date from calendar'
+          }
           color={color}
           onPress={onToggle}
           // RN types bug

src/Date/DatePickerModalHeader.tsx

@@ -31,6 +31,7 @@ export default function DatePickerModalHeader(
           <Appbar style={styles.appbarHeader}>
             <Appbar.Action
               icon="close"
+              accessibilityLabel="Close"
               onPress={props.onDismiss}
               color={color}
               testID="react-native-paper-dates-close"