bug symfony#44598 [Translation] Handle the blank-translation in Loco Adapter (kgonella)

This PR was merged into the 5.3 branch.

Discussion
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[Translation] Handle the blank-translation in Loco Adapter

| Q             | A
| ------------- | ---
| Branch?       | 5.3, 5.4, 6.0
| Bug fix?      | yes
| New feature?  | no
| Deprecations? | no
| Tickets       | Fix symfony#44595
| License       | MIT

This PR aim to be able to pull the "blank-translation" in addition to "translated" status translations. See the ticket to know more about. I don't think we can add a unit test here as the calls to loco are fully mocked.

Commits
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8b18a27 [Translation] Handle the blank-translation in Loco Adapter

Author: nicolas-grekas

src/Symfony/Component/Translation/Bridge/Loco/LocoProvider.php

@@ -99,7 +99,7 @@ public function read(array $domains, array $locales): TranslatorBag
                 $response = $this->client->request('GET', sprintf('export/locale/%s.xlf', rawurlencode($locale)), [
                     'query' => [
                         'filter' => $domain,
-                        'status' => 'translated',
+                        'status' => 'translated,blank-translation',
                     ],
                 ]);