Fix wrapper: thread silero's 64-sample audio context across sub-chunks + switch to MAX aggregation (#1290)

silero_vad.int8.onnx

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:bcb02c07075573a1707ae63cdd6a36556553e68e6c17b247f6adb059cad29ad5
-size 1388829
+oid sha256:d8e46f7deccaeadfee5f89fe88404f051b387643f4c2453b712f6c8d7b6368ac
+size 1432901

silero_vad.onnx

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:f410c85fe05a1f76856823989c8ee57f470006441a5cda07175e722482177a24
-size 2122470
+oid sha256:38348941278bccffd7bc37016009470c9a95d03b1f3d74c6b11f51bcba4b11a7
+size 2147338