HTML files preview doesn't display script tags content

Summary

The preview of HTML files hide the content of the script tag.

We noticed this after having upgraded from 15.4.0 to 15.5.0.

Steps to reproduce

Create un test.html file with the following content :

<html>
   <head>
        <script type="text/javascript">
            alert("Test");
        </script>
    </head>
    <body>
        <h1>Test HTML with inline js</h1>
    </body>
</html>

What is the current bug behavior?

The file preview do not display the content of the script tag :

What is the expected correct behavior?

The file preview diplay the whole file with the script tag content.

Relevant logs and/or screenshots

File preview :
image

Raw file :
image

Output of checks

Results of GitLab environment info

Expand for output related to GitLab environment info 
System information
System:
Current User:   git
Using RVM:      no
Ruby Version:   2.7.5p203
Gem Version:    3.1.6
Bundler Version:2.3.15
Rake Version:   13.0.6
Redis Version:  6.2.7
Sidekiq Version:6.4.2
Go Version:     unknown

GitLab information
Version:        15.5.0
Revision:       cf72b36d5fa
Directory:      /opt/gitlab/embedded/service/gitlab-rails
DB Adapter:     PostgreSQL
DB Version:     12.10
URL:            xxxxxxxxxxxxxxxxxxxxxxxxxx
HTTP Clone URL: xxxxxxxxxxxxxxxxxxxxxxxxxx
SSH Clone URL:  xxxxxxxxxxxxxxxxxxxxxxxxxx
Using LDAP:     yes
Using Omniauth: yes
Omniauth Providers: saml

GitLab Shell
Version:        14.12.0
Repository storage paths:
- default:      /var/opt/gitlab/git-data/repositories
GitLab Shell path:              /opt/gitlab/embedded/service/gitlab-shell

Results of GitLab application Check

Expand for output related to the GitLab application check 
Checking GitLab subtasks ...

Checking GitLab Shell ...


GitLab Shell: ... GitLab Shell version >= 14.12.0 ? ... OK (14.12.0)
Running /opt/gitlab/embedded/service/gitlab-shell/bin/check
Internal API available: OK
Redis available via internal API: OK
gitlab-shell self-check successful


Checking GitLab Shell ... Finished


Checking Gitaly ...


Gitaly: ... default ... OK


Checking Gitaly ... Finished


Checking Sidekiq ...


Sidekiq: ... Running? ... yes
Number of Sidekiq processes (cluster/worker) ... 1/1


Checking Sidekiq ... Finished


Checking Incoming Email ...


Incoming Email: ... Reply by email is disabled in config/gitlab.yml


Checking Incoming Email ... Finished


Checking LDAP ...


LDAP authentication... Success
LDAP users with access to your GitLab server (only showing the first 100 results)
User output sanitized. Found 100 users of 100 limit.


Checking LDAP ... Finished


Checking GitLab App ...


Database config exists? ... yes
All migrations up? ... yes
Database contains orphaned GroupMembers? ... no
GitLab config exists? ... yes
GitLab config up to date? ... yes
Log directory writable? ... yes
Tmp directory writable? ... yes
Uploads directory exists? ... yes
Uploads directory has correct permissions? ... yes
Uploads directory tmp has correct permissions? ... yes
Systemd unit files or init script exist? ... skipped (omnibus-gitlab has neither init script nor systemd units)
Systemd unit files or init script up-to-date? ... skipped (omnibus-gitlab has neither init script nor systemd units)
Projects have namespace: ... yes


Redis version >= 6.0.0? ... yes
Ruby version >= 2.7.2 ? ... yes (2.7.5)
Git user has default SSH configuration? ... yes
Active users: ... 150
Is authorized keys file accessible? ... yes
GitLab configured to store new projects in hashed storage? ... yes
All projects are in hashed storage? ... yes


Checking GitLab App ... Finished


Checking GitLab subtasks ... Finished