Fixed errcheck issues in server/channels/app/integration_action.go (#29040)

Co-authored-by: Ben Schumacher <ben.schumacher@mattermost.com>

server/i18n/en.json

@@ -6876,10 +6876,18 @@
     "id": "app.status.get.missing.app_error",
     "translation": "No entry for that status exists."
   },
+  {
+    "id": "app.submit_interactive_dialog.decode_json_error",
+    "translation": "Encountered an error decoding JSON response from interactive dialog submission."
+  },
   {
     "id": "app.submit_interactive_dialog.json_error",
     "translation": "Encountered an error encoding JSON for the interactive dialog."
   },
+  {
+    "id": "app.submit_interactive_dialog.read_body_error",
+    "translation": "Encountered an error reading response body from interactive dialog submission."
+  },
   {
     "id": "app.system.complete_onboarding_request.app_error",
     "translation": "Failed to decode the complete onboarding request."