Social: Fix share modal trigger presence (#39135)

* Only show modal trigger if there are shares for the post

* changelog

* Use only socialStore

projects/js-packages/publicize-components/changelog/fix-social-share-modal-trigger-presence

@@ -0,0 +1,4 @@
+Significance: minor
+Type: fixed
+
+Fixed a bug on when to show the share log modal trigger

projects/js-packages/publicize-components/src/components/share-status/modal-trigger.tsx

@@ -16,8 +16,13 @@ type ModalTriggerProps = ButtonProps & {
 export const ModalTrigger = forwardRef(
 	( { withWrapper = false, ...props }: ModalTriggerProps, ref: unknown ) => {
 		const { openShareStatusModal } = useDispatch( socialStore );
-
 		const featureFlags = useSelect( select => select( socialStore ).featureFlags(), [] );
+		const shareStatus = useSelect( select => select( socialStore ).getPostShareStatus(), [] );
+
+		// If the post is not shared anywhere, thus there is no share status or no shares, we don't need to show the trigger.
+		if ( ! shareStatus || ! shareStatus.shares || shareStatus.shares.length === 0 ) {
+			return null;
+		}
 
 		if ( ! featureFlags.useShareStatus ) {
 			return null;