SIGSEV crash when initializing CEF with unsupported lang (ie. `LANG=foo`)

Platform

Operating system and version: Ubuntu 20.10
OBS Studio version: OBS Studio - 26.1.1 (linux) (from official Ubuntu PPA: 26.1.1-0obsproject1~groovy)
LANG = nn_NO.UTF-8

Expected Behavior

Should be able to add Browser plugin. (this is not about opening up a file picker, can't get that far)

Current Behavior

Crashes with segmentation fault in libcef.so.

Somewhat useful stack trace:

Thread 1 "obs" received signal SIGSEGV, Segmentation fault.
GetTextDirectionForLocaleInStartUp () at ../../base/i18n/rtl.cc:205
205	../../base/i18n/rtl.cc: No such file or directory.
(gdb) bt
#0  GetTextDirectionForLocaleInStartUp() () at ../../base/i18n/rtl.cc:205
#1  0x00007fffa39d14fc in ICUIsRTL () at ../../base/i18n/rtl.cc:166
#2  IsRTL() () at ../../base/i18n/rtl.cc:155
#3  0x00007fffa461ccad in AdjustParagraphDirectionality () at ../../ui/base/l10n/l10n_util.cc:282
...
#24 0x00007fffa3744445 in CefInitialize() () at ../../cef/libcef/browser/context.cc:251
#25 0x00007fffa16f9457 in cef_initialize() () at ../../cef/libcef_dll/libcef_dll.cc:112
#26 0x00007fffacbcb36b in  () at /usr//lib/obs-plugins/obs-browser.so

Steps to Reproduce

1. Run LANG=foo obs (I had nn_NO.utf8, but seems you just need something CEF doesn't support)
2. Right-click in sources and choose "Add source -> Browser"
3. Dialog Create/Select Source come up, it says "Create new"
4. Click "OK" -> CRASH

Additional information

It works on my other laptop which is Ubuntu 20.04. It also has nn_NO.UTF-8, but I don't have it here, so can't check if there's any relevant differences.

The obs log:

• Crash backtrace with debug symbols for CEF
• old obs-crash.log (no debug symbols, useless)

Start by reproducing the crash with LANG=foo obs and follow the reported CefInitialize() path from obs-browser.so into the CEF locale stack. Use the supplied CEF backtrace and crash logs to identify where an unsupported locale is handled. Done means adding the Browser source no longer segfaults under an unsupported locale.