fix: add custom disallowed elements to Markdown component and restore the default disallowed elements

[WTW0313]

… the default disallowed elements

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• This change requires a documentation update, included: Dify Document
• I understand that this PR may be closed in case there was no previous discussion or issues. (This doesn't apply to typos!)
• I've added a test for each change that was introduced, and I tried as much as possible to make a single atomic change.
• I've updated the documentation accordingly.
• I ran dev/reformat(backend) and cd web && npx lint-staged(frontend) to appease the lint gods

[wxw18880347]

For this issue "V1.0.0 html input box rendering issue", I have already successfully merging the latest pull request,but still cannot use the INPUT tag. Can give any help?

[WTW0313]

For this issue "V1.0.0 html input box rendering issue", I have already successfully merging the latest pull request,but still cannot use the INPUT tag. Can give any help?

Hello, @wxw18880347 . Could you kindly provide more details, such as screenshots or code.

[wxw18880347]

1）I use the example DSL file supported in "#15093";
2）I pull the latest code and merge it, the INPUT cannot work;
3）I use a new folder and new port to install the latest dify, the INPUT cannot work;
4）I pull the 0.15.3 version code and install it, then the INPUT can work!

[WTW0313]

#15093

I used the latest code on main and tried the DSL file attached in #15093, the input was rendered properly.

chat-form.mp4

[wxw18880347]

screenshot_2025-03-11_12-42-13.mp4

I even deleted the mirror and completely reinstalled Dify, but still can't display the form elements. Do I need to install any plugins?

[wxw18880347]

Finally solve the problem, download and install the version 1.0.1 can display the form elements.