Add delay for tooltip to show up for buttons

[hoxbro]

screenrecord-2023-11-13_10.54.04.mp4

import panel as pn

pn.extension()

pn.widgets.Button(name="Button", description="test", description_delay=500).servable()
pn.widgets.RadioButtonGroup(
    options=["A", "B"], description="test", description_delay=500
).servable()
pn.widgets.CheckButtonGroup(
    options=["A", "B"], description="test", description_delay=500
).servable()

[codecov]

Codecov Report

Merging #5860 (1edd15c) into main (eb3ea19) will decrease coverage by 0.06%.
Report is 3 commits behind head on main.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main    #5860      +/-   ##
==========================================
- Coverage   82.37%   82.31%   -0.06%     
==========================================
  Files         290      290              
  Lines       42264    42293      +29     
==========================================
+ Hits        34814    34815       +1     
- Misses       7450     7478      +28     

Flag	Coverage Δ
ui-tests	38.22% <100.00%> (-0.19%)	⬇️
unitexamples-tests	72.29% <21.21%> (-0.04%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
panel/models/widgets.py	100.00% <100.00%> (ø)
panel/tests/ui/widgets/test_button.py	98.18% <100.00%> (+1.30%)	⬆️
panel/widgets/_mixin.py	94.44% <100.00%> (+0.32%)	⬆️
panel/widgets/button.py	87.39% <ø> (ø)
panel/widgets/select.py	94.83% <100.00%> (+0.02%)	⬆️

... and 3 files with indirect coverage changes

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[philippjfr]

Looks good, and test failures are unrelated.