Fix web search and template max tokens (#1564)

### What problem does this PR solve?


### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

graph/canvas.py

@@ -188,6 +188,7 @@ class Canvas(ABC):
         def prepare2run(cpns):
             nonlocal ran, ans
             for c in cpns:
+                if self.path[-1] and c == self.path[-1][-1]: continue
                 cpn = self.components[c]["obj"]
                 if cpn.component_name == "Answer":
                     self.answer.append(c)