Authx - Mark extension as beta

REF Deprecate method completeTransaction on contribution pages

Co-authored-by: Tim Otten <totten@civicrm.org>

[Import] [ref] Move function to parent for use by siblings

Remove deprecated preferred_mail_format from more places...

Remove some never used fields - copy & paste begone

Additional test

APIv4 - Exclude disabled custom fields

[Import] Consolidate DataSource.tpl - template for first file on activity import

[Import] Add some not-yet-used `getParser` functions that are prone to conflict

5.50 to master

Upgrader - Fix error on Snapshot::cleanupTask

This is a follow-up to #23522.

Before
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Upgrade works on `cv upgrade:db` but fails on `drush civicrm-upgrade-db`

After
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Upgrades on both `cv upgrade:db` and `drush civicrm-upgrade-db`

php8.1 - Check null first before sending to strlen

Another always-true-if

#3463 - CiviMail - prefer frontend_title from group for maili…

Test fix

Import - Relax "is_required" check for custom fields

#3177 Switch sms to use flexmailer token rendering

[REF] Fix handling of NULL values in count_characters smarty modifier…

[NFC] Bring back deleted activity email tests

SearchKit - Fix pager & tab count after creating a new record in a popup

SearchKit - Allow SearchSegments to be packaged as .mgd.php

5.50 to master

[REF] Upgrade Guzzle to 6.5.6

ProximityQuery - Remove unused code

SearchKit - Fix default aggregate function for grand total rows

Remove unused class