[iOS] progressDivider is ignored for Video.compress — Nitro passes Double, as? Int always fails #425

Same root cause as #417, but in the video path, which #417 and #422 describe as unaffected.

ios/Video/VideoMain.swift reads the option in four places as options["progressDivider"] as? Int ?? 0 (lines 67, 269, 292, 464 on main). Nitro delivers JS numbers as Double, so the cast fails and the divider falls back to 0: progress fires once per encoded frame no matter what is passed. bitrate and maxSize in the same functions already use (… as? NSNumber)?.intValue, which is why they work.

Measured on an iOS simulator with a 3-minute 1080p30 clip, compressionMethod: 'manual' and progressDivider: 1:

Android is fine (reads it with getInt).