Optimize editor performance for node selection, click target bounds, and batched messages (#3162)

* Don't clone messages during batch processing

* Improve selected nodes perf and memoize network hash computation

* Reuse click target bounding boxes for document bounds

* Early terminate computing the connected count

* Cleanup

node-graph/gcore/src/vector/click_target.rs

@@ -40,7 +40,7 @@ pub struct ClickTarget {
 
 impl ClickTarget {
 	pub fn new_with_subpath(subpath: Subpath<PointId>, stroke_width: f64) -> Self {
-		let bounding_box = subpath.loose_bounding_box();
+		let bounding_box = subpath.bounding_box();
 		Self {
 			target_type: ClickTargetType::Subpath(subpath),
 			stroke_width,

node-graph/gcore/src/vector/vector_attributes.rs

@@ -426,6 +426,11 @@ impl SegmentDomain {
 		self.all_connected(point).count()
 	}
 
+	/// Enumerate the number of segments connected to a point. If a segment starts and ends at a point then it is counted twice.
+	pub(crate) fn any_connected(&self, point: usize) -> bool {
+		self.all_connected(point).next().is_some()
+	}
+
 	/// Iterates over segments in the domain.
 	///
 	/// Tuple is: (id, start point, end point, handles)

node-graph/gcore/src/vector/vector_types.rs

@@ -322,6 +322,11 @@ impl Vector {
 		self.point_domain.resolve_id(point).map_or(0, |point| self.segment_domain.connected_count(point))
 	}
 
+	/// Enumerate the number of segments connected to a point. If a segment starts and ends at a point then it is counted twice.
+	pub fn any_connected(&self, point: PointId) -> bool {
+		self.point_domain.resolve_id(point).is_some_and(|point| self.segment_domain.any_connected(point))
+	}
+
 	pub fn check_point_inside_shape(&self, transform: DAffine2, point: DVec2) -> bool {
 		let number = self
 			.stroke_bezpath_iter()