Revert "Temporarily ignore ScrollEvent::relative_direction"

This reverts commit 19d1c53. The
required fix landed in gtk4 gir file.

Author: A6GibKm

gdk4/Gir.toml

@@ -52,6 +52,7 @@ generate = [
     "Gdk.PaintableFlags",
     "Gdk.ProximityEvent",
     "Gdk.ScrollDirection",
+    "Gdk.ScrollEvent",
     "Gdk.ScrollRelativeDirection",
     "Gdk.ScrollUnit",
     "Gdk.SeatCapabilities",
@@ -649,15 +650,6 @@ boxed_inline = true
     name = "print"
     ignore = true # This is a C helper
 
-# TODO Revert this commit once the gir files contain
-# https://gitlab.gnome.org/GNOME/gtk/-/merge_requests/9195.
-[[object]]
-name = "Gdk.ScrollEvent"
-status = "generate"
-    [[object.function]]
-    name = "get_relative_direction"
-    ignore = true
-
 [[object]]
 name = "Gdk.Seat"
 status = "generate"

gdk4/src/auto/scroll_event.rs

@@ -2,6 +2,9 @@
 // from gir-files (https://github.com/gtk-rs/gir-files)
 // DO NOT EDIT
 
+#[cfg(feature = "v4_20")]
+#[cfg_attr(docsrs, doc(cfg(feature = "v4_20")))]
+use crate::ScrollRelativeDirection;
 #[cfg(feature = "v4_8")]
 #[cfg_attr(docsrs, doc(cfg(feature = "v4_8")))]
 use crate::ScrollUnit;
@@ -46,6 +49,18 @@ impl ScrollEvent {
         unsafe { from_glib(ffi::gdk_scroll_event_get_direction(self.to_glib_none().0)) }
     }
 
+    #[cfg(feature = "v4_20")]
+    #[cfg_attr(docsrs, doc(cfg(feature = "v4_20")))]
+    #[doc(alias = "gdk_scroll_event_get_relative_direction")]
+    #[doc(alias = "get_relative_direction")]
+    pub fn relative_direction(&self) -> ScrollRelativeDirection {
+        unsafe {
+            from_glib(ffi::gdk_scroll_event_get_relative_direction(
+                self.to_glib_none().0,
+            ))
+        }
+    }
+
     #[cfg(feature = "v4_8")]
     #[cfg_attr(docsrs, doc(cfg(feature = "v4_8")))]
     #[doc(alias = "gdk_scroll_event_get_unit")]