nuget python package error fix

[hanagasira]

What does this PR do?

Closes #2436

How does this PR change Premake's behavior?

If the nuget package information could not be retrieved from the items element of the items element,
modify the items element to retrieve it from the url in the @id element of the items element.

Anything else we should know?

This may slow down the generation time because of multiple url requests.

Did you check all the boxes?

• Focus on a single fix or feature; remove any unrelated formatting or code changes
• Add unit tests showing fix or feature works; all tests pass
• Mention any related issues (put closes #XXXX in comment to auto-close issue when PR is merged)
• Follow our coding conventions
• Minimize the number of commits
• Align documentation to your changes

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