ref: fix missing Generic in spans.consumer strategy (#74683)

fixes an error when upgrading to mypy 1.11 -- the current code is
unchecked as the generics aren't matched at all

<!-- Describe your PR here. -->

src/sentry/spans/consumers/process/strategy.py

@@ -1,23 +1,21 @@
-from typing import Any, TypeVar
+from typing import Any, Generic, TypeVar
 
 from arroyo.processing.strategies.abstract import ProcessingStrategy
 from arroyo.processing.strategies.commit import CommitOffsets
-from arroyo.types import Commit, FilteredPayload, Message
+from arroyo.types import Commit, Message
 
 TPayload = TypeVar("TPayload")
 
 
-class CommitSpanOffsets(CommitOffsets):
+class CommitSpanOffsets(CommitOffsets, Generic[TPayload]):
     """
     Inherits from CommitOffsets so we can add a next step. We'd like to commit offsets for
     processed spans before carrying on the work to build segments and produce them since
     the processing messages and producing segments are two distinct operations. Span messages
     should be committed once they are processed and put into redis.
     """
 
-    def __init__(
-        self, commit: Commit, next_step: ProcessingStrategy[FilteredPayload | TPayload]
-    ) -> None:
+    def __init__(self, commit: Commit, next_step: ProcessingStrategy[TPayload]) -> None:
         super().__init__(commit=commit)
         self.__next_step = next_step