gh-35596: Fix Max=Min warning in coin interacts

    
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### 📚 Description

New versions of matplotlib complained about ymin = ymax (= 0). And I
guess it makes more sense to have a float-slider in this case anyway.

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URL: #35596
Reported by: Tobias Diez
Reviewer(s): Kwankyu Lee

src/sage/interacts/library.py

@@ -848,7 +848,7 @@ def line_to_points(x1_y1, x2_y2, **plot_kwargs):
 @library_interact(
     n=lambda: slider(2, 10000, 100, default=1000, label="Number of Tosses"),
     interval=lambda: range_slider(
-        0, 1, default=(0.45, 0.55), label="Plotting range (y)"
+        0.0, 1.0, default=(0.45, 0.55), label="Plotting range (y)"
     ),
 )
 def coin(n, interval):
@@ -877,7 +877,7 @@ def coin(n, interval):
         sage: interacts.statistics.coin()
         ...Interactive function <function coin at ...> with 2 widgets
           n: IntSlider(value=1000, description='Number of Tosses', max=10000, min=2, step=100)
-          interval: IntRangeSlider(value=(0, 0), description='Plotting range (y)', max=1)
+          interval: FloatRangeSlider(value=(0.45, 0.55), description='Plotting range (y)', max=1.0)
     """
     from random import random
     c = []

src/sage/interacts/test_jupyter.rst

@@ -281,7 +281,7 @@ Test all interacts from the Sage interact library::
     sage: test(interacts.statistics.coin)
     ...Interactive function <function coin at ...> with 2 widgets
       n: IntSlider(value=1000, description='Number of Tosses', max=10000, min=2, step=100)
-      interval: IntRangeSlider(value=(0, 0), description='Plotting range (y)', max=1)
+      interval: FloatRangeSlider(value=(0.45, 0.55), description='Plotting range (y)', max=1.0)
 
 Test matrix control (see :trac:`27735`)::