change integration tag to match python (#7128)

Author: sabrenner

packages/dd-trace/src/llmobs/plugins/genai/index.js

@@ -14,7 +14,7 @@ const {
 
 class GenAiLLMObsPlugin extends LLMObsPlugin {
   static id = 'google-genai'
-  static integration = 'genai'
+  static integration = 'google_genai'
   static prefix = 'tracing:apm:google:genai:request'
 
   constructor () {

packages/dd-trace/test/llmobs/plugins/google-genai/index.spec.js

@@ -64,7 +64,7 @@ describe('Plugin', () => {
             output_tokens: MOCK_NUMBER,
             total_tokens: MOCK_NUMBER,
           },
-          tags: { ml_app: 'test', integration: 'genai' },
+          tags: { ml_app: 'test', integration: 'google_genai' },
         })
       })
     })
@@ -110,7 +110,7 @@ describe('Plugin', () => {
             output_tokens: MOCK_NUMBER,
             total_tokens: MOCK_NUMBER,
           },
-          tags: { ml_app: 'test', integration: 'genai' },
+          tags: { ml_app: 'test', integration: 'google_genai' },
         })
       })
     })
@@ -133,7 +133,7 @@ describe('Plugin', () => {
           modelProvider: 'google',
           inputDocuments: [{ text: 'Hello, world!' }],
           outputValue: MOCK_STRING,
-          tags: { ml_app: 'test', integration: 'genai' },
+          tags: { ml_app: 'test', integration: 'google_genai' },
         })
       })
     })