fix: update the stub type alias names (#2929)

Co-authored-by: Kayce Basques <kayce@google.com>

tools/precompiler/precompiler.py

diff --git a/tools/precompiler/precompiler.py b/tools/precompiler/precompiler.py
index 310f2eb..e7c693c 100644
--- a/tools/precompiler/precompiler.py
+++ b/tools/precompiler/precompiler.py
@@ -68,12 +68,12 @@
 # A stub type alias for readability.
 # See the Bazel WorkRequest object definition:
 # https://github.com/bazelbuild/bazel/blob/master/src/main/protobuf/worker_protocol.proto
-JsonWorkerRequest = object
+JsonWorkRequest = object
 
 # A stub type alias for readability.
 # See the Bazel WorkResponse object definition:
 # https://github.com/bazelbuild/bazel/blob/master/src/main/protobuf/worker_protocol.proto
-JsonWorkerResponse = object
+JsonWorkResponse = object
 
 
 class _SerialPersistentWorker: