[networkx] Fix a few annotations in AtlasView and Graph (#13656)

Author: guitvcer

stubs/networkx/networkx/classes/coreviews.pyi

@@ -7,11 +7,13 @@ _U = TypeVar("_U")
 _V = TypeVar("_V")
 
 class AtlasView(Mapping[_T, dict[_U, _V]]):
+    def __getstate__(self) -> dict[str, Mapping[_T, dict[_U, _V]]]: ...
+    def __setstate__(self, state: dict[str, Mapping[_T, dict[_U, _V]]]) -> None: ...
     def __init__(self, d: Mapping[_T, dict[_U, _V]]) -> None: ...
     def __len__(self) -> int: ...
     def __iter__(self) -> Iterator[_T]: ...
     def __getitem__(self, key: _T) -> dict[_U, _V]: ...
-    def copy(self) -> Self: ...
+    def copy(self) -> dict[_T, dict[_U, _V]]: ...
 
 class AdjacencyView(AtlasView[_T, _U, _V]): ...
 class MultiAdjacencyView(AdjacencyView[_T, _U, _V]): ...

stubs/networkx/networkx/classes/graph.pyi

@@ -45,11 +45,11 @@ class Graph(Collection[_Node]):
     def name(self) -> str: ...
     @name.setter
     def name(self, s: str) -> None: ...
-    def __getitem__(self, n: _Node) -> AtlasView[_Node, _Node, dict[str, Incomplete]]: ...
+    def __getitem__(self, n: _Node) -> AtlasView[_Node, str, Any]: ...
     def __iter__(self) -> Iterator[_Node]: ...
     def __contains__(self, n: object) -> bool: ...
     def __len__(self) -> int: ...
-    def add_node(self, node_for_adding: _Node, **attr) -> None: ...
+    def add_node(self, node_for_adding: _Node, **attr: Any) -> None: ...  # attr: Set or change node attributes using key=value
     def add_nodes_from(self, nodes_for_adding: Iterable[_NodePlus[_Node]], **attr) -> None: ...
     def remove_node(self, n: _Node) -> None: ...
     def remove_nodes_from(self, nodes: Iterable[_Node]) -> None: ...
@@ -58,7 +58,8 @@ class Graph(Collection[_Node]):
     def number_of_nodes(self) -> int: ...
     def order(self) -> int: ...
     def has_node(self, n: _Node) -> bool: ...
-    def add_edge(self, u_of_edge: _Node, v_of_edge: _Node, **attr) -> None: ...
+    # attr: Edge data (or labels or objects) can be assigned using keyword arguments
+    def add_edge(self, u_of_edge: _Node, v_of_edge: _Node, **attr: Any) -> None: ...
     def add_edges_from(self, ebunch_to_add: Iterable[_EdgePlus[_Node]], **attr) -> None: ...
     def add_weighted_edges_from(
         self, ebunch_to_add: Iterable[tuple[_Node, _Node, Incomplete]], weight: str = "weight", **attr