Update partial while keeping context if the content is str (#883)

* Update partial while keeping context if the content is str
resolves #561

* add ignore attributes

---------

Co-authored-by: Fred Lefévère-Laoide <Fred.Lefevere-Laoide@Taipy.io>
Co-authored-by: Dinh Long Nguyen <dinhlongviolin1@gmail.com>

taipy/gui/partial.py

@@ -72,5 +72,9 @@ class Partial(_Page):
         if isinstance(content, Page):
             new_partial._renderer = content
         else:
-            new_partial._renderer = type(self._renderer)(content=content) if self._renderer is not None else None
+            new_partial._renderer = (
+                type(self._renderer)(content=content, frame=self._renderer._get_frame())
+                if self._renderer is not None
+                else None
+            )
         return new_partial