chore: upgrade to algolia sdk v4

[eric-zaharia]

Q	A
Bug fix?	no
New feature?	no
BC breaks?	yes
Related Issue	API-352
Need Doc update	yes

Changes

Migrated the project from Algolia SDK v3 to v4

Breaking Changes

Four user-facing breaking changes (documented in the upgrade doc):

1. SearchClient namespace moved

If you inject or type-hint SearchClient directly, update the FQCN:

- use Algolia\AlgoliaSearch\SearchClient;
+ use Algolia\AlgoliaSearch\Api\SearchClient;

The search.client service ID and autowiring alias are updated automatically.

2. $requestOptions no longer auto-detects flat HTTP headers

v3's RequestOptionsFactory auto-routed X-* keys to headers. v4 does not.

- $searchService->index($em, $entity, ['X-Forwarded-For' => '0.0.0.0']);
+ $searchService->index($em, $entity, ['headers' => ['X-Forwarded-For' => '0.0.0.0']]);

3. SearchServiceResponse::wait() no longer accepts parameters

v3 accepted $requestOptions to customize the wait behavior. v4 does not.

- $response->wait(['readTimeout' => 30]);
+ $response->wait();

4. SearchServiceResponse no longer extends AbstractResponse

SearchServiceResponse is now a standalone class. If you type-hint or instanceof check against the SDK's AbstractResponse, update to use SearchServiceResponse directly.

- use Algolia\AlgoliaSearch\Response\AbstractResponse;
- if ($response instanceof AbstractResponse) { ... }
+ use Algolia\SearchBundle\Responses\SearchServiceResponse;
+ if ($response instanceof SearchServiceResponse) { ... }

[codacy-production]

Up to standards ✅

🟢 Issues 0 issues

Results:
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🟢 Metrics 0 complexity . 0 duplication

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