🔄 refactor: Google grounding field to web_search for Consistency (#8285)

- Updated the Google configuration and related schemas to replace 'grounding' with 'web_search' for consistency.
- Adjusted the logic in the getGoogleConfig function to reflect the new naming convention.
- Ensured all references in parameter settings and conversation schemas are updated accordingly.

packages/api/src/endpoints/google/llm.ts

@@ -106,7 +106,7 @@ export function getGoogleConfig(
   const authHeader = options.authHeader;
 
   const {
-    grounding,
+    web_search,
     thinking = googleSettings.thinking.default,
     thinkingBudget = googleSettings.thinkingBudget.default,
     ...modelOptions
@@ -191,7 +191,7 @@ export function getGoogleConfig(
 
   const tools: GoogleAIToolType[] = [];
 
-  if (grounding) {
+  if (web_search) {
     tools.push({ googleSearch: {} });
   }