Add missing construction to TemplateTool that is present in Tool

[emilypgoogle]

TemplateTool is separate from Tool for some reason and was missing various features that are supported on Tool and work correctly with templates. This adds them to TemplateTool and adds testing to validate the maps grounding behavior on Google AI. Vertex does not respond correctly to our grounding query at the moment so has not been included.

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[github-actions]

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