Update MadLib with new category "Maternal Health" and dropdown "Maternal Mortality"

[benhammondmusic]

Updating the MadLibs Configuration for New Dataset Integration

Determine if your new dataset fits within an existing category in the CategoryMap or if it represents a new thematic area, such as "Black Women's Health," that requires adding a new category. Update this variable if applicable.

• Update DROPDOWN_TOPIC_MAP to add an entry for your dataset, using the metric's name as the key and a descriptive label as the value.
  Update SELECTED_DROPDOWN_OVERRIDES (if necessary): If your dataset requires overriding the default selections in specific contexts (e.g., when it's chosen, another dropdown should default to a specific selection), update or add to this configuration.
• Update CATEGORIES_LIST (if necessary): Similar to step 1, only update if you've introduced a new category.