gh-37202: catch possible failure in random doctest when dimension of an ideal is 1 instead of 0
    
See [here](https://github.com/sagemath/sage/actions/runs/7715956934/job/
21039012695?pr=37096#step:14:16): That ideal can have dimension $1$
instead of $0$ in rare cases, which causes the doctest to fail very
occasionally.
    
URL: #37202
Reported by: Lorenz Panny
Reviewer(s): Travis Scrimshaw

Author: Release Manager

src/sage/schemes/elliptic_curves/ell_finite_field.py

@@ -1788,7 +1788,12 @@ def twists(self):
             sage: eq = 1728*4*A**3 - j * (4*A**3 + 27*B**2)
             sage: twists2 = []
             sage: for _ in range(10):
-            ....:     V = Ideal([eq, A + B - F.random_element()]).variety()
+            ....:     I = Ideal([eq, A + B - F.random_element()])
+            ....:     try:
+            ....:         V = I.variety()
+            ....:     except ValueError:
+            ....:         if I.dimension() == 0:
+            ....:              raise
             ....:     if not V:
             ....:         continue
             ....:     sol = choice(V)