update: fix return type for numeric_metric_value in get_numeric_value and ensure key is of bytes type in hash128

Author: FarhanAnjum-opti

optimizely/helpers/event_tag_utils.py

@@ -141,4 +141,4 @@ def get_numeric_value(event_tags: Optional[EventTags], logger: Optional[Logger]
                 ' is in an invalid format and will not be sent to results.'
             )
 
-    return numeric_metric_value  # type: ignore[no-any-return]
+    return numeric_metric_value

optimizely/lib/pymmh3.py

@@ -399,7 +399,7 @@ def fmix(h: int) -> int:
 
         return h4 << 96 | h3 << 64 | h2 << 32 | h1
 
-    key = bytearray(xencode(key))
+    key = bytes(xencode(key))
 
     if x64arch:
         return hash128_x64(key, seed)