Fix: Add class name and dtype validation in copy_array_to_AlignedTable

[LincolnBurrows2017]

This PR fixes a TODO in the copy_array_to_AlignedTable function to add proper class name checking.

Previously, the function would fail with a confusing error if the wrong type of AlignedTable was passed. Now it provides clear type checking and error messages.

Changes:

• Added class name validation to ensure the input is an AlignedTable
• Added dtype validation to ensure array matches the expected type
• Provides clear TypeError messages instead of cryptic assertion errors

[meta-cla]

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[mnorris11]

Hi @LincolnBurrows2017 , thanks for fixing this TODO, if you sign the CLA we can import and merge it.