Interactive plot missing with geoviews

Hi,

I want to make an interactive plot with google map imagery as the base map. It works in python, but the plot is missing in Julia. Here is minimal example:

In Python:
```Python
from geoviews import element as elmt
GoogleMapsImagery = elmt.WMTS("https://mt1.google.com/vt/lyrs=s&x={X}&y={Y}&z={Z}",
name="GoogleMapsImagery")
GoogleMapsImagery
```
will generate a interactive map like

When converting it to Julia:
```Julia
using PyCall
elmt = pyimport("geoviews.element")
GoogleMapsImagery = elmt.WMTS("https://mt1.google.com/vt/lyrs=s&x={X}&y={Y}&z={Z}",
name="GoogleMapsImagery")
GoogleMapsImagery
```
No plot shows up. It only prints
```
PyObject :WMTS [Longitude,Latitude]
```

I am using Julia 1.8.2 and the PyCall.jl version is v1.94.1.
How to fix it? Thanks for your help!

Reproduce the minimal geoviews WMTS example with Julia 1.8.2, PyCall.jl v1.94.1, and the shown Python and Julia snippets. Start by tracing how the returned WMTS PyObject is displayed in Julia; done means the Julia expression renders the expected interactive map instead of only printing its object representation.

Scritto dal modello di indicizzazione a partire dal testo della issue.