fix: OpenAPI with provider get (#1627)

# What does this PR do?
- https://github.com/meta-llama/llama-stack/pull/1429 introduces
GetProviderResponse in OpenAPI, which is not needed, and not correctly
defined.

cc @cdoern 


[//]: # (If resolving an issue, uncomment and update the line below)
[//]: # (Closes #[issue-number])

## Test Plan
```
llama-stack-client providers list
```
<img width="610" alt="image"
src="https://github.com/user-attachments/assets/2f7b62a5-daf2-4bf9-9505-69755c7025fc"
/>


[//]: # (## Documentation)

docs/_static/llama-stack-spec.yaml

@@ -1444,6 +1444,34 @@ paths:
             schema:
               $ref: '#/components/schemas/InsertChunksRequest'
         required: true
+  /v1/providers/{provider_id}:
+    get:
+      responses:
+        '200':
+          description: OK
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ProviderInfo'
+        '400':
+          $ref: '#/components/responses/BadRequest400'
+        '429':
+          $ref: >-
+            #/components/responses/TooManyRequests429
+        '500':
+          $ref: >-
+            #/components/responses/InternalServerError500
+        default:
+          $ref: '#/components/responses/DefaultError'
+      tags:
+        - Providers
+      description: ''
+      parameters:
+        - name: provider_id
+          in: path
+          required: true
+          schema:
+            type: string
   /v1/tool-runtime/invoke:
     post:
       responses:
@@ -1783,57 +1811,6 @@ paths:
               $ref: '#/components/schemas/RegisterModelRequest'
         required: true
   /v1/providers:
-    get:
-      responses:
-        '200':
-          description: OK
-          content:
-            application/json:
-              schema:
-                $ref: '#/components/schemas/ListProvidersResponse'
-        '400':
-          $ref: '#/components/responses/BadRequest400'
-        '429':
-          $ref: >-
-            #/components/responses/TooManyRequests429
-        '500':
-          $ref: >-
-            #/components/responses/InternalServerError500
-        default:
-          $ref: '#/components/responses/DefaultError'
-      tags:
-        - Providers
-      description: ''
-      parameters: []
-  /v1/providers/{provider_id}:
-    get:
-      responses:
-        '200':
-          description: OK
-          content:
-            application/json:
-              schema:
-                $ref: '#/components/schemas/GetProviderResponse'
-        '400':
-          $ref: '#/components/responses/BadRequest400'
-        '429':
-          $ref: >-
-            #/components/responses/TooManyRequests429
-        '500':
-          $ref: >-
-            #/components/responses/InternalServerError500
-        default:
-          $ref: '#/components/responses/DefaultError'
-      tags:
-        - Providers
-      description: ''
-      parameters:
-        - name: provider_id
-          in: path
-          required: true
-          schema:
-            type: string
-  /v1/inspect/providers:
     get:
       responses:
         '200':
@@ -5460,6 +5437,32 @@ components:
         - vector_db_id
         - chunks
       title: InsertChunksRequest
+    ProviderInfo:
+      type: object
+      properties:
+        api:
+          type: string
+        provider_id:
+          type: string
+        provider_type:
+          type: string
+        config:
+          type: object
+          additionalProperties:
+            oneOf:
+              - type: 'null'
+              - type: boolean
+              - type: number
+              - type: string
+              - type: array
+              - type: object
+      additionalProperties: false
+      required:
+        - api
+        - provider_id
+        - provider_type
+        - config
+      title: ProviderInfo
     InvokeToolRequest:
       type: object
       properties:
@@ -5595,21 +5598,6 @@ components:
       required:
         - data
       title: ListModelsResponse
-    ProviderInfo:
-      type: object
-      properties:
-        api:
-          type: string
-        provider_id:
-          type: string
-        provider_type:
-          type: string
-      additionalProperties: false
-      required:
-        - api
-        - provider_id
-        - provider_type
-      title: ProviderInfo
     ListProvidersResponse:
       type: object
       properties:
@@ -6883,6 +6871,9 @@ tags:
   - name: Inspect
   - name: Models
   - name: PostTraining (Coming Soon)
+  - name: Providers
+    x-displayName: >-
+      Providers API for inspecting, listing, and modifying providers and their configurations.
   - name: Safety
   - name: Scoring
   - name: ScoringFunctions
@@ -6907,6 +6898,7 @@ x-tagGroups:
       - Inspect
       - Models
       - PostTraining (Coming Soon)
+      - Providers
       - Safety
       - Scoring
       - ScoringFunctions