The error message is unreadable

[zhangjingwei]

Description
===========
The error message is unreadable

Steps to reproduce
==================
1. go to settings-metadata page
2. create a metadata with the value "{}"

Expected result
===============
Get an readable error message

Actual result
=============
Get an unreadable error message

Environment
===========
1. version of skyline apiserver: master
2. version of skyline console: master

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/c/openstack/skyline-console/+/885936

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/skyline-console/+/885936
Committed: https://opendev.org/openstack/skyline-console/commit/38c2939d658e752cb21517060db332aaa17e3185
Submitter: "Zuul (22348)"
Branch: master

commit 38c2939d658e752cb21517060db332aaa17e3185
Author: Jingwei.Zhang <[e-mail]>
Date: Tue Jun 13 14:44:48 2023 +0800

    fix: fix the error message

    Fix the unreadable error messages with html characters.

    Closes-Bug: #2023627
    Change-Id: I06d09327d1423578efafc8e51107acb4025e992b

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/skyline-console 3.0.0.0rc1 release candidate.