Typeshed cherry-picks: gettext and sqlite3 fixes (#12797)

* gettext: Make GNUTranslations.CONTEXT not final (python/typeshed#7841)
* sqlite3: Avoid optional type for 'description' (python/typeshed#7842)

Author: JukkaL

mypy/typeshed/stdlib/gettext.pyi

@@ -96,7 +96,7 @@ class NullTranslations:
 class GNUTranslations(NullTranslations):
     LE_MAGIC: Final[int]
     BE_MAGIC: Final[int]
-    CONTEXT: Final[str]
+    CONTEXT: str
     VERSIONS: Sequence[int]
 
 @overload  # ignores incompatible overloads

mypy/typeshed/stdlib/sqlite3/dbapi2.pyi

@@ -374,8 +374,9 @@ class Cursor(Iterator[Any]):
     arraysize: int
     @property
     def connection(self) -> Connection: ...
+    # May be None, but using | Any instead to avoid slightly annoying false positives.
     @property
-    def description(self) -> tuple[tuple[str, None, None, None, None, None, None], ...] | None: ...
+    def description(self) -> tuple[tuple[str, None, None, None, None, None, None], ...] | Any: ...
     @property
     def lastrowid(self) -> int | None: ...
     row_factory: Callable[[Cursor, Row[Any]], object] | None