Receipts are not request despite it's enabled and worked with older versions before

[sezuan]

Expected Behavior

<request xmlns='urn:xmpp:receipts'/> added to messages, but

Current Behavior

it isn't.

Steps to Reproduce (for bugs)

Send message to contact that support message receipts.

Environment

• Give us the version and build information output generated by profanity -v

Profanity, version 0.18.0dev.master.3af4e9a
Copyright (C) 2012 - 2019 James Booth <boothj5web@gmail.com>.
Copyright (C) 2019 - 2026 Michael Vetter <jubalh@iodoru.org>.
License GPLv3+: GNU GPL version 3 or later <https://www.gnu.org/licenses/gpl.html>

This is free software; you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Build information:
XMPP library: libstrophe
Desktop notification support: Enabled
OTR support: Enabled (libotr 4.1.1)
PGP support: Enabled (libgpgme 2.0.1)
OMEMO support: Enabled
C plugins: Enabled
Python plugins: Enabled (3.13.12)
GTK icons/clipboard: Enabled
GDK Pixbuf: Enabled

• Operating System/Distribution: debian sid
• glib version: 2.42
• libstrophe version: 0.14.0
• omemo backend: libomemo-c0 0.5.1

[jubalh]

Please test the PR.