Add "name" to foreign key creation to prevent "random" names

[nickvergessen]

Steps to reproduce

1. Install mail
2. Check DB
3. See index names like IDX_715DB7E31594979

Expected behavior

Specify a useful short name of table+columns or the usecase

mail/lib/Migration/Version1120Date20220223094709.php

Line 95 in bd428bb

$recipientsTable->addForeignKeyConstraint($localMessageTable, ['local_message_id'], ['id'], ['onDelete' => 'CASCADE']);

Actual behavior

See index names like IDX_715DB7E31594979

Mail app version

No response

Mailserver or service

No response

Operating system

No response

PHP engine version

No response

Web server

No response

Database

No response

Additional info

No response