fix: Port upstream PRs #1038, #1037, #1045, #1019

- #1038 (partial): Add .erase() for consumed words in layoutAndExtractLines
  to fix redundant early flush bug; fix wordContinues flag in hyphenateWordAtIndex
- #1037: Add combining mark handling for hyphenation (NFC-like precomposition)
  and rendering (base glyph tracking in EpdFont, GfxRenderer including CCW)
- #1045: Shorten STR_FORGET_BUTTON labels across all 9 translation files
- #1019: Display file extensions in File Browser via getFileExtension helper
- Pull romanian.yaml from upstream/master (merged PR #987)

Co-authored-by: Cursor <cursoragent@cursor.com>

lib/I18n/I18nKeys.h

@@ -13,6 +13,7 @@ extern const char* const STRINGS_CZ[];
 extern const char* const STRINGS_PO[];
 extern const char* const STRINGS_RU[];
 extern const char* const STRINGS_SV[];
+extern const char* const STRINGS_RO[];
 }  // namespace i18n_strings
 
 // Language enum
@@ -25,6 +26,7 @@ enum class Language : uint8_t {
   PORTUGUESE = 5,
   RUSSIAN = 6,
   SWEDISH = 7,
+  ROMANIAN = 8,
   _COUNT
 };
 
@@ -419,6 +421,8 @@ inline const char* const* getStringArray(Language lang) {
       return i18n_strings::STRINGS_RU;
     case Language::SWEDISH:
       return i18n_strings::STRINGS_SV;
+    case Language::ROMANIAN:
+      return i18n_strings::STRINGS_RO;
     default:
       return i18n_strings::STRINGS_EN;
   }