Steps to reproduce:

1. Set NVDA to Spanish (es)
2. Open the add-on store
3. Select the Available add-ons tab
4. Select an add-on with translated information, like clipContentsDesigner
5. Press tab until the description is displayed.

Actual behavior:

Sometimes, the description appears in Spanish, and sometimes is presented in English.

Expected behavior:

The description should be presented in Spanish.

NVDA logs, crash dumps and other attachments:

n/a. This is related to the store itself.

Running transformations to generate views locally, using the addon-datastore-transform repo, and changing the code to log the availableLanguages without writing add-ons, we can see that "es" and "ES", in lowercase and uppercase, both are available. Discarding the "ES" language and running the transformation again, translations are available, but at this moment they aren't available when "ES" and "es" are in availableLanguages.
I think that this can be fixed tweaking the getAddonManifestLocalizations in the addon-datastore-validation repo, used to create the json file and to regenerate translations.
In this way, new add-ons shouldn't be affected by this problem, and when translations are regenerated it should disapear.
I think that we can triage and open this in NVDA's repo since it's affecting NVDA, @seanbudd

System configuration

NVDA installed/portable/running from source:

Installed or portable.

NVDA version:

NVDA 2024.4.1

Windows version:

n/a.

Name and version of other software in use when reproducing the issue:

n/a

Other information about your system:

Other questions

Does the issue still occur after restarting your computer?

Yes.

Have you tried any other versions of NVDA? If so, please report their behaviors.

n/a

If NVDA add-ons are disabled, is your problem still occurring?

n/a

Does the issue still occur after you run the COM Registration Fixing Tool in NVDA's tools menu?

n/a

Commit of addon-datastore for testing

ff34ebae8dfb1a40b68c196a36cba0798607096c