Provide special type for replace usages on dataclasses (PY-28957)

python/testData/paramInfo/DataclassesReplace/a.py

@@ -0,0 +1,35 @@
+from dataclasses import dataclass, field, InitVar, replace
+
+
+@dataclass
+class A:
+    a: int
+    b: str = "str"
+
+
+replace(A(1), <arg1>)
+
+
+@dataclass
+class B:
+    a: int
+    b: str = field(default="str", init=False)
+
+
+replace(B(1), <arg2>)
+
+
+@dataclass
+class C:
+    a: int
+    b: InitVar[str] = "str"
+
+
+replace(C(1), <arg3>)
+
+
+class D:
+    pass
+
+
+replace(D(), <arg4>)

python/testData/paramInfo/DataclassesReplace/dataclasses.py

@@ -0,0 +1,20 @@
+class _InitVarMeta(type):
+    def __getitem__(self, params):
+        return self
+
+class InitVar(metaclass=_InitVarMeta):
+    pass
+
+
+def dataclass(_cls=None, *, init=True, repr=True, eq=True, order=False,
+              unsafe_hash=False, frozen=False):
+    pass
+
+
+def field(*, default=MISSING, default_factory=MISSING, init=True, repr=True,
+          hash=None, compare=True, metadata=None):
+    pass
+
+
+def replace(obj, **changes):
+    pass