When running tests locally, NVDA depends on the system language to be English #13362

Steps to reproduce:

1. On a system that is not set to English as the language, but has a language supported by NVDA, build NVDA from source.
2. Run tests, at least the system tests.

Actual behavior:

Almost all tests fail because the NVDA test harness expects English language output everywhere, including the Chrome UI. Local tests cannot be run and fail almost 100%.

Expected behavior:

NVDA should force itself and the apps it uses to run in English if it needs that, even on non-English systems.

System configuration

NVDA installed/portable/running from source:

Running from source.

NVDA version:

Any current master that supports running tests.

Windows version:

Any supported.

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

Chrome browser for system robot Chrome tests.

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.

No.

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

Yes.

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

N/A.