epg-encrypt-string in Emacs seems to be incompatible with GnuPG 2.4.1 on macOS, 2.4.0 works

[Robert Irelan]

I'm not sure what info will be most useful for debugging this, but the
`epg-encrypt-string` function seems not to work with GnuPG 2.4.1 on
macOS, while GnuPG 2.4.0 works (both on x86_64, macOS 13.3.1, Macports
used to install both).

This is the command line that seems to hang with 2.4.1:

```
/opt/local/bin/gpg2 --no-tty --status-fd 1 --yes
--enable-progress-filter --command-fd 0 --output
/var/folders/gc/73c5zcp918z9dssx8k1sybh00000gn/T/epg-output2zVC4K
--pinentry-mode ask --decrypt --
/var/folders/gc/73c5zcp918z9dssx8k1sybh00000gn/T/epg-inputMnF1UG
```

No settings in common.conf, gpg-agent.conf, or gpg.conf seem to affect
this hanging command. Let me know what info I can provide to help
debug this further

-- 
Robert Irelan
rirelan at gmail.com