slds-dropdown_fluid is reported as "deprecated, or invalid"

[Bartheleway]

Summary

The css class slds-dropdown_fluid is reported as "deprecated, or invalid" but it's not flagged as "deprecated" on the SLDS documentation

Steps To Reproduce:

1. Create a LWC
2. In the html add a div with a class slds-dropdown_fluid
3. Save

Expected result

No error

Actual result

The line is underline in red with an error reported by SLDS.

Error : Deprecated, or invalid, utility class: "slds-dropdown_fluid"

Additional information

Documentation doesn't mention the class in the "Overview of CSS classes". I wonder if this means the CSS class has been removed a long time ago or if it is just a mistake.

VS Code Version: 1.63.2

SFDX CLI Version: sfdx-cli/7.130.1 win32-x64 node-v16.13.1

OS and version: Windows 10