Break down and allow basic test access to Map soy params. Update [] to use it.
Break down and allow basic test access to Map soy params. Update [] to use it.

GITHUB_BREAKING_CHANGES=N/A

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=294537070

google/closure-templates,google/closure-templates,yext/closure-templates,google/closure-templates,google/closure-templates,yext/closure-templates,yext/closure-templates,yext/closure-templates,google/closure-templates