fix(App): uni.showActionSheet i18n

src/core/helpers/i18n/en.json

 {
   "uni.async.error": "The connection timed out, click the screen to try again.",
-  "uni.showActionSheet.cancel": "cancel",
+  "uni.showActionSheet.cancel": "Cancel",
   "uni.showToast.unpaired": "Please note showToast must be paired with hideToast",
   "uni.showLoading.unpaired": "Please note showLoading must be paired with hideLoading",
   "uni.showModal.cancel": "Cancel",

src/core/helpers/i18n/es.json

 {
   "uni.async.error": "Se agotó el tiempo de conexión, haga clic en la pantalla para volver a intentarlo.",
-  "uni.showActionSheet.cancel": "cancelar",
+  "uni.showActionSheet.cancel": "Cancelar",
   "uni.showToast.unpaired": "Tenga en cuenta que showToast debe estar emparejado con hideToast",
   "uni.showLoading.unpaired": "Tenga en cuenta que showLoading debe estar emparejado con hideLoading",
   "uni.showModal.cancel": "Cancelar",

src/platforms/app-plus/service/api/ui/popup.js

@@ -6,6 +6,10 @@ import {
   invoke
 } from '../../bridge'
 
+import {
+  t
+} from 'uni-core/helpers/i18n'
+
 let toast
 let toastType
 let timeout
@@ -151,7 +155,7 @@ export function showActionSheet ({
     options.title = title
   }
 
-  options.cancel = ''
+  options.cancel = t('uni.showActionSheet.cancel')
 
   plus.nativeUI.actionSheet(Object.assign(options, {
     popover
@@ -167,4 +171,4 @@ export function showActionSheet ({
       })
     }
   })
-}
+}