[hrithiksaini99]

Fixes #16542.

In networkx, set_edge_attributes(G, values, name=None) and set_node_attributes(G, values, name=None) support setting an attribute to a scalar value (e.g. nx.set_edge_attributes(G, 5, "weight"), nx.set_node_attributes(G, "red", "color")). When name is provided and values is not a dictionary, NetworkX treats values as a constant attribute value applied to all edges or nodes.

Previously, set_edge_attributes and set_node_attributes only accepted SupportsItems when name was supplied, causing mypy to reject valid scalar values with:

Argument 2 to "set_edge_attributes" has incompatible type "int"; expected "SupportsItems[tuple[Any, Any], Any]"

This PR:

• Allows values: object when name: str in set_edge_attributes and set_node_attributes (matching both scalar constants and dicts).
• Preserves dictionary item requirements for both MultiGraph and Graph when name: None = None.
• Adds test cases in check_tricky_function_params-py312.py verifying scalar and dictionary attribute calls on graphs and multigraphs.

[github-actions]

According to mypy_primer, this change has no effect on the checked open source code. 🤖🎉