Handle chr() range checks without Rust integer overflow (#7422)

Lib/test/test_builtin.py

@@ -367,7 +367,6 @@ class BuiltinTest(ComplexesAreIdenticalMixin, unittest.TestCase):
         c3 = C3()
         self.assertTrue(callable(c3))
 
-    @unittest.expectedFailure # TODO: RUSTPYTHON; OverflowError: Python int too large to convert to Rust isize
     def test_chr(self):
         self.assertEqual(chr(0), '\0')
         self.assertEqual(chr(32), ' ')

crates/vm/src/stdlib/builtins.rs

@@ -88,7 +88,7 @@ mod builtins {
     #[pyfunction]
     fn chr(i: PyIntRef, vm: &VirtualMachine) -> PyResult<CodePoint> {
         let value = i
-            .try_to_primitive::<isize>(vm)?
+            .as_bigint()
             .to_u32()
             .and_then(CodePoint::from_u32)
             .ok_or_else(|| vm.new_value_error("chr() arg not in range(0x110000)"))?;