chore!: BREAKING CHANGE: vector_db_id -> vector_store_id (#3923)

# What does this PR do?


## Test Plan
CI
vector_io tests will fail until next client sync

passed with
https://github.com/llamastack/llama-stack-client-python/pull/286 checked
out locally

client-sdks/stainless/openapi.yml

@@ -9862,7 +9862,7 @@ components:
             $ref: '#/components/schemas/RAGDocument'
           description: >-
             List of documents to index in the RAG system
-        vector_db_id:
+        vector_store_id:
           type: string
           description: >-
             ID of the vector database to store the document embeddings
@@ -9873,7 +9873,7 @@ components:
       additionalProperties: false
       required:
         - documents
-        - vector_db_id
+        - vector_store_id
         - chunk_size_in_tokens
       title: InsertRequest
     DefaultRAGQueryGeneratorConfig:
@@ -10044,7 +10044,7 @@ components:
           $ref: '#/components/schemas/InterleavedContent'
           description: >-
             The query content to search for in the indexed documents
-        vector_db_ids:
+        vector_store_ids:
           type: array
           items:
             type: string
@@ -10057,7 +10057,7 @@ components:
       additionalProperties: false
       required:
         - content
-        - vector_db_ids
+        - vector_store_ids
       title: QueryRequest
     RAGQueryResult:
       type: object
@@ -10281,7 +10281,7 @@ components:
     InsertChunksRequest:
       type: object
       properties:
-        vector_db_id:
+        vector_store_id:
           type: string
           description: >-
             The identifier of the vector database to insert the chunks into.
@@ -10300,13 +10300,13 @@ components:
           description: The time to live of the chunks.
       additionalProperties: false
       required:
-        - vector_db_id
+        - vector_store_id
         - chunks
       title: InsertChunksRequest
     QueryChunksRequest:
       type: object
       properties:
-        vector_db_id:
+        vector_store_id:
           type: string
           description: >-
             The identifier of the vector database to query.
@@ -10326,7 +10326,7 @@ components:
           description: The parameters of the query.
       additionalProperties: false
       required:
-        - vector_db_id
+        - vector_store_id
         - query
       title: QueryChunksRequest
     QueryChunksResponse:
@@ -11844,7 +11844,7 @@ components:
           description: Type of the step in an agent turn.
           const: memory_retrieval
           default: memory_retrieval
-        vector_db_ids:
+        vector_store_ids:
           type: string
           description: >-
             The IDs of the vector databases to retrieve context from.
@@ -11857,7 +11857,7 @@ components:
         - turn_id
         - step_id
         - step_type
-        - vector_db_ids
+        - vector_store_ids
         - inserted_context
       title: MemoryRetrievalStep
       description: >-