HTML entities in video filenames are decoded before sending request

[iw0nderhow]

Describe the bug
I can't view any videos with filenames containing HTML entities, e.g. &.

To Reproduce
Steps to reproduce the behavior:

1. Upload a video.
2. Rename it to &.mp4.
3. Open it
4. Doesn't work

Expected behavior
The video opens.

Screenshots
If applicable, add screenshots to help explain your problem.

Desktop (please complete the following information):
Firefox 120, macOS 14. Nextcloud 27.1.4.

Browser log

[INFO] viewer: Opening viewer for file  
Object { app: "viewer", uid: "christopher", level: 0, path: "/Downloads/Archiv/&.mp4" }
ConsoleLogger.js:53:18
File info for /Downloads/Archiv/&.mp4 fetched 
Object { filename: "/Downloads/Archiv/&.mp4", basename: "&.mp4", lastmod: "Wed, 06 Dec 2023 19:30:44 GMT", size: 20766733, type: "file", etag: "20da2f45465bb77c597cfd0b65fd6533", mime: "video/mp4", getlastmodified: "Wed, 06 Dec 2023 19:30:44 GMT", getcontenttype: "video/mp4", resourcetype: "", … }
Viewer.vue:608
Error loading /Downloads/Archiv/&.mp4 
error { target: div.plyr.plyr--full-ui.plyr--video.plyr--html5.plyr--fullscreen-enabled.plyr--paused.plyr--stopped, isTrusted: false, detail: {…}, srcElement: div.plyr.plyr--full-ui.plyr--video.plyr--html5.plyr--fullscreen-enabled.plyr--paused.plyr--stopped, currentTarget: div.viewer__file.viewer__file--active, eventPhase: 3, bubbles: true, cancelable: false, returnValue: true, defaultPrevented: false, … }
Mime.js:140:11

Additional context
Add any other context about the problem here.

[skjnldsv]

I will need a screenshot of your network requests.
Before you do anything, still on the development tools, there is a tab called network. Click on it. Open the file and screenshot the network log like this (scroll at the bottom or make sure we can see the request to your media file):

[iw0nderhow]

Hi! Sorry for the huge delay. This is still an issue in Nextcloud 28. Here's the screenshot:

The first request is me renaming the file to &.mp4, then I click to view the file.