[file_sys] Avoid crash on empty NACP language entries (#4062)

This fixes an Android game library scan crash when reading XCI title metadata with empty or incomplete NACP language entries.

Previously, NACP::GetLanguageEntry() could fall back to:

language_entries.at(static_cast<u8>(Language::AmericanEnglish))

When language_entries was empty, this threw std::out_of_range and aborted the Android scan thread.

The new fallback preserves the existing lookup order:
1. preferred language entry with non-empty application name
2. any entry with non-empty application name
3. first available entry
4. static empty LanguageEntry if no entries exist

Tested locally with a Mainline RelWithDebInfo APK on Odin3 Android 15 using a large external TF-card ROM directory. The previous build crashed during fresh ROM scan; the patched build completes scanning normally.

Related my issue:
https://github.com/eden-emulator/Issue-Reports/issues/500

Co-authored-by: bdm110 <bdm110@prontmail.com>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/4062
Reviewed-by: Lizzie <lizzie@eden-emu.dev>
Reviewed-by: MaranBr <maranbr@eden-emu.dev>
Reviewed-by: crueter <crueter@eden-emu.dev>

0 files changed, 0 insertions, 0 deletions