[V1] Extract: Add Overall Confidence Score into Review page

[zdeveloper]

Add Overall Confidence Score into Review page

Acceptance Criteria the Overall Confidence Score should be calculated as follows:

• The average of all the individual confidence scores
• Once a field is manually edited, then count its confidence as 100%, recalculate overall confidence
• follow the attached design, use uswds components without customization
• hovering over the tooltip should show the following text Overall Confidence Score is the average of all Individual Confidence Scores

Additional context https://www.figma.com/design/1FW8ZSDV90q2wpRPOADE9r/MDE?node-id=578-15021&t=bwiR5RebgkhEYYAO-4