Fix mis-scaled signals for subject 004: divide by 1e6 (part 1/33 of full fix for subjects 004,005,008-035,058-060).

sourcedata/braindecode/dataset.zarr/recording_4/data/c/0/0/0

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:58e9cdf1df9eb916d3d0a7eb09311d8bd29015e25982d67629737ed837de101a
-size 18525919
+oid sha256:13d06aab0e4bc403b2f940775ba4f0bc7b002495a36d5e818d7d3cd25175cb79
+size 18525177

sourcedata/braindecode/dataset.zarr/recording_4/data/c/1/0/0

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:7049ad235f1aa340d3ac255b71f8240545bd9e0ff66bc690b5f4b32a1813cd46
-size 11586779
+oid sha256:e0c7e23ea3e9fc48d9822387d03d10ee397bbaaf0e2ae272786cb90e8cab0b4f
+size 11585456