Refactor: Abstract dimension input and finalize creation logic to SketchTool

Co-authored-by: aider (gemini/gemini-2.5-pro) <aider@aider.chat>

src/RectangleTool.h

@@ -12,16 +12,16 @@ public:
 
     void mousePressEvent(QMouseEvent *event) override;
     void mouseMoveEvent(QMouseEvent *event) override;
-    void keyPressEvent(QKeyEvent *event) override;
 
     void paintGL() override;
     void paint2D(QPainter& painter, const QMatrix4x4& modelView, const QMatrix4x4& projection) override;
 
     void activate() override;
-    void deactivate() override;
+
+protected:
+    void finalizeCreation() override;
 
 private:
-    bool m_isDefiningRectangle = false;
     gp_Pnt m_firstRectanglePoint;
 };