Fix duplicated name in test

Author: sterliakov

test-data/unit/stubgen.test

@@ -4277,7 +4277,7 @@ class X:
     a: int = field(default=-1)
     b: set[int] = field(default={0})
     c: list[int] = field(default=[x for x in range(5)])
-    c: list[int] = field(default={x: x for x in range(5)})
+    d: dict[int, int] = field(default={x: x for x in range(5)})
     e: tuple[int, int] = field(default=(1, 2, 3)[1:])
     f: tuple[int, int] = field(default=(1, 2, 3)[:2])
     g: tuple[int, int] = field(default=(1, 2, 3)[::2])
@@ -4292,6 +4292,7 @@ class X:
     a: int = field(default=-1)
     b: set[int] = field(default={0})
     c: list[int] = field(default=Incomplete)
+    d: dict[int, int] = field(default=Incomplete)
     e: tuple[int, int] = field(default=(1, 2, 3)[1:])
     f: tuple[int, int] = field(default=(1, 2, 3)[:2])
     g: tuple[int, int] = field(default=(1, 2, 3)[::2])