#### What type of PR is this?
/area ui
/kind improvement
/milestone 2.16.x
#### What this PR does / why we need it:
优化页面设置弹窗的显示逻辑，改为在未打开弹窗组件的时候不渲染组件，减少不必要的请求。
#### Which issue(s) this PR fixes:
#### Does this PR introduce a user-facing change?
```release-note
优化页面设置弹窗的显示逻辑，减少不必要的请求。
```
#### What type of PR is this?
/area ui
/kind improvement
/milestone 2.14.x
#### What this PR does / why we need it:
编辑文章匹配编辑器类型时，忽略大小写。
#### Which issue(s) this PR fixes:
Fixes https://github.com/halo-dev/halo/issues/5597
#### Does this PR introduce a user-facing change?
```release-note
None
```
#### What type of PR is this?
/area ui
/kind bug
/milestone 2.14.x
#### What this PR does / why we need it:
重构文章预览和主题预览的页面加载方式，尝试解决在某些情况下打开预览导致登录 session 失效的问题。
#### Which issue(s) this PR fixes:
Fixes https://github.com/halo-dev/halo/issues/4047
#### Special notes for your reviewer:
需要测试：
1. 主题预览中的各个功能是否正常。
2. 文章预览功能是否正常。
#### Does this PR introduce a user-facing change?
```release-note
修复在某些情况下，打开文章预览或主题预览之后导致登录失效的问题。
```
#### What type of PR is this?
/area editor
/area ui
/kind feature
#### What this PR does / why we need it:
为默认编辑器添加标题输入框。
<img width="1665" alt="image" src="https://github.com/halo-dev/halo/assets/21301288/df903e02-76b0-45fe-89d9-6ac81af8f041">
#### Which issue(s) this PR fixes:
Fixes#5427
#### Special notes for your reviewer:
#### Does this PR introduce a user-facing change?
```release-note
为默认编辑器添加标题输入框。
```
Ryan Wang