The personal data export email for privacy requests should be in the users locale

[garrett-eclipse]

Hello,

From testing in #44721 we found that the second email sent to the user (the fulfillment email) is not in their locale but it should be.

Example from @birgire - https://core.trac.wordpress.org/attachment/ticket/44721/user-fullfilment-email.jpg

[garrett-eclipse]

Export Fulfillment email that should be in user locale

[dejliglama]

While waiting for Berlin (and the rest of the roadmap), a ticket like this which i think we can all agree - is a good idea, could be expedited.

[garrett-eclipse]

Patch to make Erasure fulfillment emails in users locale

[garrett-eclipse]

Mimicking @birgire's successful patch (44721-2.diff) from #44721 I've applied the same logic into the wp_privacy_send_personal_data_export_email function found in file.php to create patch 46056.diff.

[garrett-eclipse]

Added Unit Tests following the convention set in #44721

[garrett-eclipse]

.mo binary for testing de_DE as svn diff doesn't support

[garrett-eclipse]

.mo binary for testing es_ES as svn diff doesn't support

[garrett-eclipse]

Uploaded 46056.2.diff to provide unit tests which follow the same as was laid out in #44721. Attached .mo files should be placed in the tests/phpunit/data/languages folder as they couldn't be included in the svn diff, their .po counterparts are there.
*This will require a refresh once #44721 is committed

[garrett-eclipse]

Updated component/focus to match it's sister ticket #44721

[garrett-eclipse]

Refresh to account for #44721 being committed - Changed are isolated to .po test files. .mo versions coming shortly

[garrett-eclipse]

Refreshed de_DE.mo due to #44721

[garrett-eclipse]

Refresh of es_ES.mo due to #44721

[garrett-eclipse]

Refreshed the .po and .mo files due to #44721 being committed to trunk 🎉.
Note to testers and committers: For successful unit tests place the de_DE.2.mo and es_ES.2.mo into the .../tests/phpunit/data/languages folder as de_DE.mo and es_ES.mo respectively.
*Sorry can't include in svn diff due to binary files being excluded from diffs.

[SergeyBiryukov]

In 45062:

Privacy: Ensure the personal data export email is sent in the locale of the user whose data is being exported (or the site's default locale if they are not a registered user) when the administrator fulfilling the request uses a different locale.

Props garrett-eclipse.
Fixes #46056.

[garrett-eclipse]

Thanks @SergeyBiryukov greatly appreciate the review and commit. Cheers

[SergeyBiryukov]

In 45063:

PHPCS: Fix WPCS violations in [45062].

See #46056.