fix: newly added setting item are not taking effect #4486
Merged
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What type of PR is this?
/kind improvement
/area core
/milestone 2.9.x
What this PR does / why we need it:
修复新增加的配置项默认值没有填充的问题
how to test it?
测试插件和主题新增加的配置项(带默认值)在升级后是否具有默认值
Which issue(s) this PR fixes:
Fixes #4377
Does this PR introduce a user-facing change?