Fix: let quot stay. (#6377)

### What problem does this PR solve?

#6337

### Type of change

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

agent/component/template.py

                 r"\{%s\}" % re.escape(n), v, content
             )
             content = re.sub(
-                r"(\\\"|\")", "", content
+                r"(\\\")", "", content
             )
             content = re.sub(
                 r"(#+)", r" \1 ", content