Ensure pixel_ratio is applied when computing resampling coordinates

[ahuang11]

Closes #6372

Before:

Screen.Recording.2024-09-16.at.3.13.05.PM.mov

After:

Screen.Recording.2024-09-16.at.3.13.53.PM.mov

import pandas as pd
import holoviews as hv
from holoviews.operation import apply_when
from holoviews.operation.datashader import rasterize
from functools import partial
import panel as pn

hv.extension("bokeh")

df = pd.DataFrame(
    {
        "lon": [45.5531, 46.4731, 47.4731, 48.41234],
        "lat": [34.5531, 35.4731, 36.4731, 37.41234],
    }
)

def _resample_obj(operation, obj, opts):
    def exceeds_resample_when(plot):
        return len(plot) > 1000

    processed = apply_when(
        obj, operation=partial(operation, **opts), predicate=exceeds_resample_when
    )
    return processed


points = hv.Points(df, ["lon", "lat"])
resampled_points = _resample_obj(rasterize, points, {})
pn.serve(resampled_points)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.50%. Comparing base (c233dd1) to head (bf7c777).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #6373   +/-   ##
=======================================
  Coverage   88.49%   88.50%           
=======================================
  Files         323      323           
  Lines       68180    68194   +14     
=======================================
+ Hits        60338    60355   +17     
+ Misses       7842     7839    -3     

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[github-actions]

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