bug symfony#61769 [Mailer][Sendgrid] Add support for global region (api transport) (sonnymilton)

This PR was merged into the 7.4 branch.

Discussion
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[Mailer][Sendgrid] Add support for `global` region (api transport)

| Q             | A
| ------------- | ---
| Branch?       | 7.4
| Bug fix?      | no
| New feature?  | yes
| Deprecations? | no
| Issues        | Fix symfony#61706
| License       | MIT

Related to symfony#61706 and symfony#61758
Add support for `global` region (`SendgridApiTransport`)

Commits
-------

8eb5a45 [Mailer][Sendgrid] Add support for `global` region (api transport)

Author: fabpot

src/Symfony/Component/Mailer/Bridge/Sendgrid/Tests/Transport/SendgridApiTransportTest.php

@@ -43,6 +43,10 @@ public static function getTransportData()
                 new SendgridApiTransport('KEY', null, null, null, 'eu'),
                 'sendgrid+api://api.eu.sendgrid.com',
             ],
+            [
+                new SendgridApiTransport('KEY', null, null, null, 'global'),
+                'sendgrid+api://api.sendgrid.com',
+            ],
             [
                 (new SendgridApiTransport('KEY'))->setHost('example.com'),
                 'sendgrid+api://example.com',

src/Symfony/Component/Mailer/Bridge/Sendgrid/Transport/SendgridApiTransport.php

@@ -199,7 +199,7 @@ private function getAttachments(Email $email): array
     private function getEndpoint(): ?string
     {
         $host = $this->host ?: str_replace('%region_dot%', '', self::HOST);
-        if (null !== $this->region && null === $this->host) {
+        if (null !== $this->region && 'global' !== $this->region && null === $this->host) {
             $host = str_replace('%region_dot%', $this->region.'.', self::HOST);
         }