Uploads: Explicitly disabled s3 streaming in config

This was the default option anyway, just adding here for
better visibility of this being set.
Can't enable without issues as the app will attempt to seek which does
not work for these streams. Also have not tested on non-s3, s3-like
systems.

app/Config/filesystems.php

@@ -58,6 +58,7 @@ return [
             'endpoint'                => env('STORAGE_S3_ENDPOINT', null),
             'use_path_style_endpoint' => env('STORAGE_S3_ENDPOINT', null) !== null,
             'throw'                   => true,
+            'stream_reads'            => false,
         ],
 
     ],