Other misc typing fixes

Author: ankith26

buildconfig/stubs/pygame/font.pyi

@@ -20,7 +20,7 @@ def match_font(
     italic: Hashable = False,
 ) -> str: ...
 def SysFont(
-    name: Union[str, bytes, Iterable[Union[str, bytes]]],
+    name: Union[str, bytes, Iterable[Union[str, bytes]], None],
     size: int,
     bold: Hashable = False,
     italic: Hashable = False,

buildconfig/stubs/pygame/freetype.pyi

@@ -16,7 +16,7 @@ def get_cache_size() -> int: ...
 def get_default_resolution() -> int: ...
 def set_default_resolution(resolution: int) -> None: ...
 def SysFont(
-    name: Union[str, bytes, Iterable[Union[str, bytes]]],
+    name: Union[str, bytes, Iterable[Union[str, bytes]], None],
     size: int,
     bold: int = False,
     italic: int = False,

buildconfig/stubs/pygame/math.pyi

@@ -114,7 +114,7 @@ class _GenericVector(Collection[float]):
     @overload
     def clamp_magnitude_ip(self, min_length: float, max_length: float) -> None: ...
     def project(self: _TVec, other: Union[Sequence[float], _TVec]) -> _TVec: ...
-    def __round__(self: _TVec, ndigits: Optional[int]) -> _TVec: ...
+    def __round__(self: _TVec, ndigits: Optional[int] = None) -> _TVec: ...
 
 # VectorElementwiseProxy is a generic, it can be an elementwiseproxy object for
 # Vector2, Vector3 and vector subclass objects