Ftr/11726 recipeint filter fade message

[jagu65]

High level description:
Added fade and search message to recipient filter.

Technical details:
The fade and the message will only show if there is no valid user input in the search box.

JIRA Ticket:
DEV-11726

Mockup:
Zeplin

The following are ALL required for the PR to be merged:

Author:

• Linked to this PR in JIRA ticket
• Scheduled demo including Design/Testing/Front-end OR Provided instructions for testing in JIRA and PR if applicable
• Verified cross-browser compatibility: Chrome, Safari, Firefox, Edge
• Verified mobile/tablet/desktop/monitor responsiveness
• Verified that this PR does not create any new accessibility issues (via Axe Chrome extension)
• Added Unit Tests for helper functions, reducers, models and Container/Component Interactivity Expectations if applicable React Testing Library
• API contract updated if applicable
• Component Library Integration Status Report updated if applicable

Reviewer(s):

• Design review complete if applicable
• API #1234 merged concurrently if applicable
• Code review complete

[anjenkin]

Should there be more padding here so the text isn't so close to the scroll bar? OR the better solution would be for the message to not be in the same container with the scrollable content, so the scrollbar doesn't obstruct the message. Either way is fine.