Update default currency in CompanySettingsService to MYR

app/Concerns/HasJournalEntryActions.php

             return '0';
         }
 
-        $currency = currency('USD');
+        $currency = currency('MYR');
         $decimal = $currency->getDecimalMark();
 
         if (substr($amount, -1) === $decimal) {

app/Services/CompanySettingsService.php

         return [
             'default_language' => config('transmatic.source_locale'),
             'default_timezone' => config('app.timezone'),
-            'default_currency' => 'USD',
+            'default_currency' => 'MYR',
             'default_date_format' => DateFormat::DEFAULT,
             'default_time_format' => TimeFormat::DEFAULT,
             'default_week_start' => WeekStart::DEFAULT,

tests/Feature/Setting/LocalizationTest.php

     $localization->update(['language' => 'en']);
 
     // Test fixed amount formatting
-    expect(rateFormat(100000, 'fixed', 'USD'))->toBe('$100,000.00 USD');
+    expect(rateFormat(100000, 'fixed', 'MYR'))->toBe('$100,000.00 USD');
 
     // Test percentage formatting
     $scaledRate = RateCalculator::decimalToScaledRate(0.000025); // 0.25%