change numberMatched not to be an alias

Author: Phil Varner

stapi-fastapi/src/stapi_fastapi/routers/root_router.py

@@ -287,7 +287,7 @@ async def get_orders(  # noqa: C901
         return OrderCollection(
             features=orders,
             links=links,
-            number_matched=orders_count,
+            numberMatched=orders_count,
         )
 
     async def get_order(self, order_id: str, request: Request) -> Order[OrderStatus]:

stapi-pydantic/src/stapi_pydantic/order.py

@@ -129,7 +129,7 @@ class OrderCollection(_GeoJsonBase, Generic[T]):
     type: Literal["FeatureCollection"] = "FeatureCollection"
     features: list[Order[T]]
     links: list[Link] = Field(default_factory=list)
-    number_matched: int | None = Field(serialization_alias="numberMatched", exclude_if=lambda v: v is None)
+    numberMatched: int | None = Field(default=None, exclude_if=lambda x: x is None)
 
     def __iter__(self) -> Iterator[Order[T]]:  # type: ignore [override]
         """iterate over features"""