fix(mp_plot): force true to initial_view_on attribute in multiplot python

Author: Tanguylo

plot_data/core.py

@@ -1384,7 +1384,7 @@ def __init__(self, plots: List[PlotDataObject], sizes: List[Window] = None, elem
         self.sizes = sizes
         self.coords = coords
         self.point_families = point_families
-        self.initial_view_on = initial_view_on
+        self.initial_view_on = True
         super().__init__(width=width, height=height, type_='multiplot', name=name)