Enhance template selection logic in VideoEditor to handle current frame matches

This commit updates the template selection logic in the VideoEditor to correctly identify and utilize templates that start at the current frame. The changes include additional checks to remove or use templates based on their start frames, improving the efficiency and accuracy of template management during video editing sessions.

croppa/main.py

@@ -2419,6 +2419,11 @@ class VideoEditor:
                 if i > 0:
                     template_to_remove = i - 1
                 break
+            elif start_frame == current_frame:
+                # Found template with start_frame == current_frame
+                # Remove THIS template
+                template_to_remove = i
+                break
         
         if template_to_remove is not None:
             removed_template = self.templates.pop(template_to_remove)
@@ -2442,6 +2447,10 @@ class VideoEditor:
                     return i - 1
                 else:
                     return None
+            elif start_frame == frame_number:
+                # Found template with start_frame == current_frame
+                # Use THIS template
+                return i
                     
         # If no template found with start_frame > current_frame, use the last one
         return len(self.templates) - 1 if self.templates else None