[Bug]: "get images directly from WMS server" is not using the server authentication (when one is needed)

[gioman]

What is the bug? (in English)

If a WMS layer from a server that needs authentication is added to a project, it works only if the requests are re-routed through QGIS Server, if the option "get images directly from WMS server" is activated then on lizmap load the browser pops up a dialog asking the credentials.

Steps to reproduce the issue

Create a project with a WMS layer from a server that needs authentication.

Test it on lizmap, with "get images directly from WMS server" unchecked first and then checked.

Versions, safeguards, check summary etc

Versions :

• Lizmap Web Client : 3.6.14
• Lizmap plugin : 4.3.16
• QGIS Desktop : 3.34.9
• QGIS Server : 3.34.9
• Py-QGIS-Server : not used
• QGIS Server plugin atlasprint : not found
• QGIS Server plugin lizmap_server : 2.9.4
• QGIS Server plugin wfsOutputExtension : 1.8.1

List of safeguards :

• Mode : normal
• Allow parent folder : yes
• Number of parent : 2 folder(s)
• Prevent other drive : yes
• Prevent PG service : no
• Prevent PG Auth DB : yes
• Force PG user&pass : yes
• Prevent ECW : yes

Check Lizmap plugin

• I have done the step just before in the Lizmap QGIS desktop plugin before opening this ticket. Otherwise, my ticket is not considered valid and might get closed.

Operating system

Ubuntu 22.04

Browsers

Firefox, Chrome

Browsers version

Latest updates

Relevant log output

No response