Fix:When you create a new API module named xxxa_api, the access route will become xxx instead of xxxa. For example, when I create a new API module named 'data_api', the access route will become 'dat' instead of 'data (#7325)

### What problem does this PR solve?

Fix:When you create a new API module named xxxa_api, the access route
will become xxx instead of xxxa. For example, when I create a new API
module named 'data_api', the access route will become 'dat' instead of
'data'
Fix:Fixed the issue where the new knowledge base would not be renamed
when there was a knowledge base with the same name

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

---------

Co-authored-by: tangyu <1@1.com>
Co-authored-by: Kevin Hu <kevinhu.sh@gmail.com>

api/apps/__init__.py

 def register_page(page_path):
     path = f"{page_path}"
 
-    page_name = page_path.stem.rstrip("_app")
+    page_name = page_path.stem.removesuffix("_app")
     module_name = ".".join(
         page_path.parts[page_path.parts.index("api"): -1] + (page_name,)
     )

api/apps/kb_app.py

         status=StatusEnum.VALID.value)
     try:
         req["id"] = get_uuid()
+        req["name"] = dataset_name
         req["tenant_id"] = current_user.id
         req["created_by"] = current_user.id
         e, t = TenantService.get_by_id(current_user.id)