Fix missing vars and catch bad shim (#1541)

I made a mistake when cherry-picking things into #1534. Fixing it also
prompted me to regenerate message things without thinking even though it
wasn't needed here but it helped me catch an issue with a bad shim. I
must not have saved it properly on my computer and missed it before
review.

photon-lib/py/photonlibpy/targeting/photonTrackedTarget.py

@@ -16,6 +16,8 @@ class PhotonTrackedTarget:
     minAreaRectCorners: list[TargetCorner] = field(default_factory=list[TargetCorner])
     detectedCorners: list[TargetCorner] = field(default_factory=list[TargetCorner])
     poseAmbiguity: float = 0.0
+    objDetectId: int = -1
+    objDetectConf: float = 0.0
 
     def getYaw(self) -> float:
         return self.yaw

photon-serde/message_data_types.yaml

@@ -18,7 +18,7 @@ int32:
   java_type: int
   cpp_type: int32_t
   java_decode_method: decodeInt
-  java_encode_shim: encodeBoolean
+  java_encode_shim: encodeInt
 int64:
   len: 8
   java_type: long