Import Packages does not show differences on Data Query Graph Mappings

[TheWitness]

Describe the bug

Under Data Collection > Data Queries > Edit > Edit Graph Template differences here in either renaming or adding mapped Graph Templates to Data Queries is missed when importing a package or Device Template or Data Query.

Expected behavior

Cacti's difference engine should call out these differences so that the user knows what they will be importing.

[github-actions]

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