Use assert_allclose in test_svg_native_size

[cdeil]

This makes test_svg_native_size robust by using assert_allclose for the float check.

When I run doit test_ui locally I see 4 fails:

FAILED panel/tests/ui/pane/test_image.py::test_svg_native_size[False] - assert 507.2109375 == 507.203125
FAILED panel/tests/ui/pane/test_image.py::test_svg_native_size[True] - assert 507.2109375 == 507.203125
FAILED panel/tests/ui/io/test_jupyterlite.py::test_jupyterlite_execution - playwright._impl._errors.TimeoutError: Timeout 20000ms exceeded.
FAILED panel/tests/ui/widgets/test_tabulator.py::test_tabulator_patch_no_height_resize - TimeoutError: wait_until timed out in 5000 milliseconds

The other two I can run like this:

pytest -v panel/tests/ui/io/test_jupyterlite.py --ui
pytest -v panel/tests/ui/widgets/test_tabulator.py --ui

and see that this is the problem:

OSError: [Errno 24] Too many open files

But I'm not sure why Panel opens so many files or how to fix this.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.88%. Comparing base (385617b) to head (389cd48).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #6635   +/-   ##
=======================================
  Coverage   82.88%   82.88%           
=======================================
  Files         313      313           
  Lines       46132    46133    +1     
=======================================
+ Hits        38236    38237    +1     
  Misses       7896     7896           

Flag	Coverage Δ
ui-tests	40.00% <100.00%> (+<0.01%)	⬆️
unitexamples-tests	71.17% <50.00%> (+<0.01%)	⬆️

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[philippjfr]

But I'm not sure why Panel opens so many files or how to fix this.

Unclear to me too, suspect it must be sockets not files.

[philippjfr]

Will merge, failing tests are fixed separately.