[Feature] Update Activity Overview for MMIS

[thetif]

Description and related issues

MMIS Activities don't have different funding types, so the funding type needs to be removed. Schedule has already been moved as part of #4371. The rich text fields are also different.

Shared fields

• Activity Name

Fields for MMIS only

• Activity Snapshot
• Problem Statement
• Proposed Solution

Remove the Program type field.

Fields for HITECH only

• Program type
• Summary
• Description
• Alternatives
• Standards and Conditions

Behind the scenes changes:

• add new set methods for the new MMIS fields actions/editActivity/overview.js.

Schema format for this section:

...
activities: [{
  ...
  activityOverview: {
    activitySnapshot: 'String',
    problemStatement: 'String', 
    proposedSolution: 'String'
  },
  ...
}]
...

Mockups or link to Figma

https://www.figma.com/file/hJpKHKU6fz5J0Z7fisSwa2/eAPD-MMIS-2022?node-id=1388:12346&t=gKKGaYKaKXLCJ9Tk-0

Acceptance criteria

Given	When	Then

This task is done when…

• all acceptance criteria are met
• the Activity Overview component has been updated to handle HITECH and MMIS APD activities
• the new MMIS values are saving in mongo
• the new MMIS values are being displayed when the APD is opened again