devel/electron4: Fix pkg-plist and change default options

Fix pkg-plist when DIST option is OFF.
The DIST option is set OFF by default, reducing the package size.
Bump PORTREVISION.

PR: 239459
Submitted by: maintainer
Reported by: Sebastian Stroniewski-Wojtczak
Obtained from: https://github.com/tagattie/FreeBSD-Electron/pull/16