Remove unwanted space at the end of the price

This `number_to_currency` method seems to display an extra space, not necessary when unit is `''`
Strip it.

Update specs as well. Thanks @filipefurtad0 for specs!!!

app/views/spree/admin/variants/_form.html.haml

@@ -23,7 +23,7 @@
       = f.text_field :sku, class: 'fullwidth'
     .field
       = f.label :price, t('.price')
-      = f.text_field :price, class: 'fullwidth', "ng-model" => "variant.price", "ng-init" => "variant.price = '#{number_to_currency(@variant.price, unit: '')}'"
+      = f.text_field :price, class: 'fullwidth', "ng-model" => "variant.price", "ng-init" => "variant.price = '#{number_to_currency(@variant.price, unit: '').strip}'"
     .field
       = hidden_field_tag 'product_variant_unit', @product.variant_unit
       = hidden_field_tag 'product_variant_unit_name', @product.variant_unit_name
@@ -64,4 +64,4 @@
       - value = number_with_precision(@variant.send(field), precision: 2)
       = f.number_field field, value: value, class: 'fullwidth', step: 0.01
 
-.clear
+.clear

spec/system/admin/variants_spec.rb

@@ -208,10 +208,10 @@ describe '
             page.find('table.index .icon-edit').click
 
             # assert on the price field
-            expect(page).to have_field "variant_price", with: "19,99 "
+            expect(page).to have_field "variant_price", with: "19,99"
 
             # When I update the fields and save the variant
-            fill_in "variant_price", with: "12,50 "
+            fill_in "variant_price", with: "12,50"
             click_button 'Actualizar'
             expect(page).to have_content \
               %(Variant "#{product.name}" ha sido actualizado exitosamente)
@@ -231,13 +231,9 @@ describe '
       end
 
       it_behaves_like "with localization", false, ".", ","
-      it_behaves_like "with localization", true, ".", "," do
-        before { pending("#11085") }
-      end
+      it_behaves_like "with localization", true, ".", ","
       it_behaves_like "with localization", false, ",", "."
-      it_behaves_like "with localization", true, ",", "." do
-        before { pending("#11085") }
-      end
+      it_behaves_like "with localization", true, ",", "."
     end
   end