[ty] Sync vendored typeshed stubs (#20031)

Co-authored-by: typeshedbot <>
Co-authored-by: Alex Waygood <alex.waygood@gmail.com>

crates/ty_python_semantic/resources/mdtest/snapshots/deprecated.md_-_Tests_for_the_`@depr…_-_Syntax_(142fa2948c3c6cf1).snap

@@ -91,14 +91,14 @@ error[missing-argument]: No argument provided for required parameter `arg` of bo
 7 | from typing_extensions import deprecated
   |
 info: Parameter declared here
-   --> stdlib/typing_extensions.pyi:967:28
+   --> stdlib/typing_extensions.pyi:973:28
     |
-965 |         stacklevel: int
-966 |         def __init__(self, message: LiteralString, /, *, category: type[Warning] | None = ..., stacklevel: int = 1) -> None: ...
-967 |         def __call__(self, arg: _T, /) -> _T: ...
+971 |         stacklevel: int
+972 |         def __init__(self, message: LiteralString, /, *, category: type[Warning] | None = ..., stacklevel: int = 1) -> None: ...
+973 |         def __call__(self, arg: _T, /) -> _T: ...
     |                            ^^^^^^^
-968 |
-969 |     @final
+974 |
+975 |     @final
     |
 info: rule `missing-argument` is enabled by default
 

crates/ty_python_semantic/src/types/infer.rs

@@ -4680,20 +4680,11 @@ impl<'db, 'ast> TypeInferenceBuilder<'db, 'ast> {
         }
 
         // Handle various singletons.
-        if let Type::NominalInstance(instance) = declared.inner_type() {
-            if instance
-                .class(self.db())
-                .is_known(self.db(), KnownClass::SpecialForm)
+        if let Some(name_expr) = target.as_name_expr() {
+            if let Some(special_form) =
+                SpecialFormType::try_from_file_and_name(self.db(), self.file(), &name_expr.id)
             {
-                if let Some(name_expr) = target.as_name_expr() {
-                    if let Some(special_form) = SpecialFormType::try_from_file_and_name(
-                        self.db(),
-                        self.file(),
-                        &name_expr.id,
-                    ) {
-                        declared.inner = Type::SpecialForm(special_form);
-                    }
-                }
+                declared.inner = Type::SpecialForm(special_form);
             }
         }
 

crates/ty_python_semantic/src/types/special_form.rs

@@ -154,9 +154,10 @@ impl SpecialFormType {
             | Self::Intersection
             | Self::CallableTypeOf
             | Self::Protocol  // actually `_ProtocolMeta` at runtime but this is what typeshed says
-            | Self::Generic  // actually `type` at runtime but this is what typeshed says
             | Self::ReadOnly => KnownClass::SpecialForm,
 
+            Self::Generic => KnownClass::Type,
+
             Self::List
             | Self::Dict
             | Self::DefaultDict