Fix: prevent custom edge_cmap from being overwritten in nx_draw_with_pos_and_attr (#93)

[Ashu-Rajput08]

Describe your changes

This PR fixes an issue in nx_draw_with_pos_and_attr where a user-provided edge_cmap could be unintentionally overwritten by the default colormap.

The existing implementation checked for the key "cmap" in kwargs before assigning a default edge colormap, while the value being set was "edge_cmap". Since "cmap" corresponds to the node colormap parameter, this mismatch caused the condition to evaluate to True even when a custom edge_cmap was already provided. As a result, the user-defined edge colormap could be silently replaced.

This change updates the condition to check for "edge_cmap" instead of "cmap", ensuring that the default edge colormap is only applied when the user has not explicitly provided one.

No additional dependencies are required for this change.

Issue Link

Closes #93

Type of change

• 🐛 Bug fix (non-breaking change that fixes an issue)
• ✨ New feature (non-breaking change that adds functionality)
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