Pen: Escape after the path is deselected ends something else

The Pen and the Smart Pen reported a path being drawn to Escape for as
long as they remembered the path, even after Deselect or Undo left it
unselected. That Escape then ended nothing, and isolation mode or a
rotated view needed a second press. Both tools now report the path only
while they would go on drawing it, as the Curvature tool does.

Follows #6405

crates/tools/src/addons/smart_pen.rs

@@ -548,8 +548,8 @@ impl Tool for SmartPenTool {
     }
 
     /// A path being drawn: Escape ends it.
-    fn ends_on_escape(&self, _cx: &ToolContext) -> bool {
-        self.path.is_some()
+    fn ends_on_escape(&self, cx: &ToolContext) -> bool {
+        self.active(cx).is_some()
     }
 
     fn deactivate(&mut self, _cx: &ToolContext) -> Vec<Action> {

crates/tools/src/pen.rs

@@ -243,8 +243,8 @@ impl Tool for PenTool {
         self.drag.is_some() || self.handle.is_some() || self.convert.is_some()
     }
     /// A path being drawn: Escape ends it.
-    fn ends_on_escape(&self, _cx: &ToolContext) -> bool {
-        self.path.is_some()
+    fn ends_on_escape(&self, cx: &ToolContext) -> bool {
+        self.active(cx).is_some()
     }
     fn pointer(&mut self, cx: &ToolContext, ev: &PointerEvent) -> Vec<Action> {
         let tol = cx.tol(5.0).max(cx.point_tol());