merging two style instance should give a style instance

reflex/style.py

@@ -292,6 +292,19 @@ class Style(dict):
             )
         super().__setitem__(key, value)
 
+    def __or__(self, other: Style) -> Style:
+        """Combine two styles.
+
+        Args:
+            other: The other style to combine.
+
+        Returns:
+            The combined style.
+        """
+        if not isinstance(other, Style):
+            other = Style(other)
+        return Style(super().__or__(self, other))
+
 
 def _format_emotion_style_pseudo_selector(key: str) -> str:
     """Format a pseudo selector for emotion CSS-in-JS.