Remove I18n gem-monkey-patching

.github/workflows/ruby.yml

@@ -17,7 +17,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-18.04]
-        ruby: [ 2.7, 3.0 ]
+        ruby: [ 2.7  ]
     runs-on: ${{ matrix.os }}
     continue-on-error: ${{ endsWith(matrix.ruby, 'head') || matrix.ruby == 'debug' }}
     steps:
@@ -100,11 +100,6 @@ jobs:
       - name: Give test coverage reporter executable permissions
         run: chmod +x cc-test-reporter
 
-      - uses: actions/download-artifact@v1
-        with:
-          name: coverage-2.6
-          path: coverage
-
       - uses: actions/download-artifact@v1
         with:
           name: coverage-2.7

lib/gem_monkey_patches/i18n.rb

@@ -5,6 +5,7 @@ module I18n
     alias_method :original_localize, :localize
 
     def localize(object, options = {})
+      options.merge!({ default: '-' })
       object.present? ? original_localize(object, options) : ''
     end
   end

test/system/admin_area/prices_test.rb

@@ -20,6 +20,7 @@ class AdminAreaPricesTest < ApplicationSystemTestCase
     fill_in 'Valid from', with: effective_date
     click_on 'Create price'
 
+
     assert_text 'Price has been created'
     assert_text I18n.localize(effective_date)
   end