Fix list examples in Python (for real) (#8034)

The patch in #7967 forgot the prefix, this fixes it, and change the
sampels so that we can see the effect this time.

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonClientCodegen.java

@@ -1050,7 +1050,7 @@ public class PythonClientCodegen extends PythonLegacyClientCodegen {
         } else if (ModelUtils.isArraySchema(schema)) {
             if (objExample instanceof Iterable) {
                 // If the example is already a list, return it directly instead of wrongly wrap it in another list
-                return objExample.toString();
+                return fullPrefix + objExample.toString();
             }
             ArraySchema arrayschema = (ArraySchema) schema;
             Schema itemSchema = arrayschema.getItems();

modules/openapi-generator/src/test/resources/3_0/python/petstore-with-fake-endpoints-models-for-testing-with-http-signature.yaml

@@ -133,6 +133,7 @@ paths:
             type: array
             items:
               type: string
+            example: ['tag1', 'tag2']
       responses:
         '200':
           description: successful operation

samples/openapi3/client/petstore/python/docs/PetApi.md

@@ -477,9 +477,7 @@ configuration.access_token = 'YOUR_ACCESS_TOKEN'
 with petstore_api.ApiClient(configuration) as api_client:
     # Create an instance of the API class
     api_instance = pet_api.PetApi(api_client)
-    tags = [
-        "tags_example",
-    ] # [str] | Tags to filter by
+    tags = ["tag1","tag2"] # [str] | Tags to filter by
 
     # example passing only required values which don't have defaults set
     try: