Normalize Elasticsearch API client javaagent package

[trask]

Part of

• Tracking package and module name alignment #18428

[Copilot]

Pull request overview

This PR normalizes the package name for the Elasticsearch API client (7.16) javaagent instrumentation to match its directory structure and align with the broader package/module naming alignment effort referenced in #18428.

Changes:

• Renamed javaagent main-source packages from ...elasticsearch.apiclient to ...elasticsearch.api.client.v7_16.
• Updated impacted static imports to the new package path.
• Updated unit-test imports/packages to reference the new package.

Reviewed changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
instrumentation/elasticsearch/elasticsearch-api-client-7.16/javaagent/src/test/java/io/opentelemetry/javaagent/instrumentation/elasticsearch/api/client/v7_16/ElasticsearchClientTest.java	Updates test package declaration to the normalized ...api.client.v7_16 namespace.
instrumentation/elasticsearch/elasticsearch-api-client-7.16/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/elasticsearch/api/client/v7_16/RestClientTransportInstrumentation.java	Updates package declaration and static import to match the new namespace.
instrumentation/elasticsearch/elasticsearch-api-client-7.16/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/elasticsearch/api/client/v7_16/RestClientHttpClientInstrumentation.java	Updates package declaration and static import to match the new namespace.
instrumentation/elasticsearch/elasticsearch-api-client-7.16/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/elasticsearch/api/client/v7_16/EndpointId.java	Updates package declaration to the normalized namespace.
instrumentation/elasticsearch/elasticsearch-api-client-7.16/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/elasticsearch/api/client/v7_16/ElasticsearchEndpointMap.java	Updates package declaration to the normalized namespace.
instrumentation/elasticsearch/elasticsearch-api-client-7.16/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/elasticsearch/api/client/v7_16/ElasticsearchApiClientSingletons.java	Updates package declaration to the normalized namespace.
instrumentation/elasticsearch/elasticsearch-api-client-7.16/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/elasticsearch/api/client/v7_16/ElasticsearchApiClientInstrumentationModule.java	Updates package declaration to the normalized namespace.
instrumentation/elasticsearch/elasticsearch-api-client-7.16/javaagent-unit-tests/src/test/java/io/opentelemetry/javaagent/instrumentation/elasticsearch/rest/ElasticsearchEndpointMapTest.java	Updates import to reference ElasticsearchEndpointMap in the new package.