Correctly configure rate limiter

The rate limiter was configured to 0 because we did math in fixed
point. This is now fixed.

Also, the rate limiter now supports 0 and doesn't return NaN.

Test: Manual verification of data via logging
Change-Id: Ifef562c504db405fe1098b47d047696fd9292845
diff --git a/media/libheadtracking/Pose.cpp b/media/libheadtracking/Pose.cpp
index 47241ce..ae39512 100644
--- a/media/libheadtracking/Pose.cpp
+++ b/media/libheadtracking/Pose.cpp
@@ -43,7 +43,7 @@
         return {to, false};
     }
     // Always rate limit if t is 0 (required to avoid division by 0).
-    if (t == 0) {
+    if (t == 0 || maxTranslationalVelocity == 0 || maxRotationalVelocity == 0) {
         return {from, true};
     }