Paranoia test TSP client (#1844)

## Description

Added paranoia checks to satisfy @Gold872 

## Meta

Merge checklist:
- [x] Pull Request title is [short, imperative
summary](https://cbea.ms/git-commit/) of proposed changes
- [x] The description documents the _what_ and _why_
- [ ] If this PR changes behavior or adds a feature, user documentation
is updated
- [ ] If this PR touches photon-serde, all messages have been
regenerated and hashes have not changed unexpectedly
- [ ] If this PR touches configuration, this is backwards compatible
with settings back to v2024.3.1
- [x] If this PR addresses a bug, a regression test for it is added

photon-targeting/src/main/native/include/net/TimeSyncClient.h

@@ -96,6 +96,10 @@ class TimeSyncClient {
   void Stop();
   int64_t GetOffset();
   Metadata GetMetadata();
+
+  // public for testability
+  void UpdateStatistics(uint64_t pong_local_time, wpi::tsp::TspPing ping,
+                        wpi::tsp::TspPong pong);
 };
 
 }  // namespace tsp