Unable to adjust the marker size for map scatter

[guillaumevernieres]

In

eva/src/eva/plotting/batch/hvplot/diagnostics/hvplot_map_scatter.py

Line 44 in d60260f

s=int(marker_size)+3, xlabel='Longitude',

this

                           s=int(marker_size)+3, xlabel='Longitude',

doesn't seem correct and should be something like

                           s=marker_size, xlabel='Longitude',

where marker_size is a float.