fix(events): suppression de l'event qui track l'input agreement search

[maxgfr]

fix #7196

[revu-bot]

PR Summary: Remove cc_search Agreement Search Input Tracking Event

This PR removes the analytics event that tracked every keystroke in the agreement search input (cc_search / AGREEMENT_SEARCH), as it was generating excessive data volume (issue #7196). The change is clean and well-scoped.

What was done

• Removed emitAgreementSearchInputEvent from useAgreementSearchTracking
• Removed AGREEMENT_SEARCH from MatomoSearchAgreementCategory enum and CC_SEARCH from TrackingAgreementSearchCategory
• Removed trackingActionName prop from AgreementSearchInput and related components
• Updated all tests to reflect the reduced event count

Issues Found

File	Lines	Severity	Issue
tracking.ts	22	IMPORTANT	TrackingAgreementSearchAction.AGREEMENT_SEARCH enum value is now orphaned/misleading
tracking.ts	1	MINOR	Unused uuid import was removed — but v4 mock still present in some test files
AgreementSearchForm.tsx	81	IMPORTANT	trackingActionName prop removed from AgreementSearchInput but still declared in AgreementSearchForm's own Props type

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
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

[tokenbureau]

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