Feature/CDD-3257: Search fixes

[rhys-burendo]

Description

Ticket to address graphical issues in new search:

• Header height
• Search bar location
• Font size in search bar
• Search response hover effects
• Ability to escape the search responses
• Mobile responsiveness rework

Fixes #CDD-3257

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

• Unit tests
• Playwright e2e tests
• Mobile responsiveness
• Accessibility (i.e. Lighthouse audit)
• Disabled JavaScript

Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• Any styles in this change follow the 'STYLES.md' guide
• My changes are progressively enhanced with graceful degredagation for older browsers and non-JavaScript users
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

[github-actions]

Unit tests coverage

Lines	Statements	Branches	Functions
	94.75% (4226/4460)	85.2% (1319/1548)	95.34% (757/794)

Tests	Skipped	Failures	Errors	Time
1631	0 💤	0 ❌	0 🔥	27.515s ⏱️

[sonarqubecloud]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud