Link to website in mermaid node is not working properly

[AngryNui]

Describe the bug
Links in mermaid to external websites won't open when opening .md in collectives.
Links in mermaid fail to open new tab when using _blank (also in markdown editor not only in collective).

To Reproduce
Steps to reproduce the behavior:

1. Create collective/.md with a mermaid-codeblock and add

%%{init: {'securityLevel':'loose'}}%%
flowchart
	Nextcloud --> 2 --> 3 ---> Nextcloud

click Nextcloud href "https://nextcloud.com/" _blank 

3. Click on the nextcloud-node in mermaid diagram
4. See no external website will open nor a new tab
5. Go to filebrowser open .md and click on the nextcloud-node in mermaid diagram
6. See external website will load but won't open in a new tab

Expected behavior
open new tab with external website when using _blank like described in
Mermaid Docs

Server details:

• Collectives app version: [2.9.2]
• Nextcloud version: [28.0.3]

Client details:

• OS: [Windows]
• Browser: [Firefox]
• Browser version: [123.0.1]
• Device: [desktop]

[AngryNui]

same behavior after update

• Collectives app version: [2.10.0]

[AngryNui]

same behavior after update

• Collectives app version: [2.10.1]
• Nextcloud version: [28.0.4]