[oauthlib] Add missing stubs (#14301)

stubs/oauthlib/@tests/stubtest_allowlist.txt

@@ -1 +0,0 @@
-oauthlib.oauth1.rfc5849.parameters.prepare_headers

stubs/oauthlib/METADATA.toml

@@ -1,6 +1,2 @@
 version = "3.3.*"
 upstream_repository = "https://github.com/oauthlib/oauthlib"
-partial_stub = true
-
-[tool.stubtest]
-ignore_missing_stub = true

stubs/oauthlib/oauthlib/oauth1/rfc5849/parameters.pyi

@@ -1,5 +1,5 @@
 from _typeshed import Incomplete
 
-def prepare_headers(oauth_params, headers: Incomplete | None = ..., realm: Incomplete | None = ...): ...
+def prepare_headers(params, headers: Incomplete | None = ..., realm: Incomplete | None = ...): ...
 def prepare_form_encoded_body(oauth_params, body): ...
 def prepare_request_uri_query(oauth_params, uri): ...

stubs/oauthlib/oauthlib/oauth2/rfc6749/request_validator.pyi

@@ -57,3 +57,4 @@ class RequestValidator:
     def is_pkce_required(self, client_id: str, request: Request) -> bool: ...
     def get_code_challenge(self, code: str, request: Request) -> str: ...
     def get_code_challenge_method(self, code: str, request: Request) -> str: ...
+    def is_origin_allowed(self, client_id: str, origin, request: Request, *args, **kwargs) -> bool: ...