[TASK] Remove ES type leakage from public ContentletAPI contracts

[fabrizzio-dotCMS]

Description

Public interfaces ContentletAPI, ContentletAPIPreHook, ContentletAPIPostHook, and ContentletAPIInterceptor currently reference ES-specific types (ESSearchResults, SearchCriteria, SearchResponse). This blocks Phase 3 because in an OS-only environment these types cannot be instantiated.

Priority: Blocking Phase 3
Gate: dotEvergreen R7 cutover (~Aug 18) — deprecated signatures must remain until then

Files

File	ES types to remove	Replacement
ContentletAPI.java	ESSearchResults, SearchCriteria	Remove deprecated esSearch/esSearchRaw signatures
ContentletAPIPreHook.java	SearchCriteria parameter	Vendor-neutral SearchQuery
ContentletAPIPostHook.java	SearchCriteria parameter	Vendor-neutral SearchQuery
ContentletAPIInterceptor.java	SearchResponse, ESSearchResults, SearchCriteria	ContentSearchResults<T>, SearchQuery

Checklist

• Remove deprecated esSearch / esSearchRaw signatures from ContentletAPI
• Remove ESSearchResults and SearchCriteria imports from ContentletAPI
• Migrate SearchCriteria parameter in ContentletAPIPreHook to neutral type
• Migrate SearchCriteria parameter in ContentletAPIPostHook to neutral type
• Replace SearchResponse, ESSearchResults, SearchCriteria in ContentletAPIInterceptor with ContentSearchResults<T> and SearchQuery

Acceptance Criteria

• Zero org.elasticsearch.* or com.dotcms.content.elasticsearch.* imports in all four files
• All existing ContentletAPI hook implementations compile without modification
• Integration tests pass