bug(stepper): mat-horizontal-stepper-content-inactive REMOVED

[passee]

Is this a regression?

• Yes, this behavior used to work in the previous version

The previous version in which this bug was not present was

19.1.5

Description

After migrating to Angular V19 (latest minor version) I discovered that our elements in the stepper content are not displayed correctly.
Then i dig into the changes and find out that classes were removed or replaced with others.
Before there was mat-horizontal-stepper-content-inactive and now it looks like its replaced with mat-horizontal-stepper-content-previous and mat-horizontal-stepper-content-next.

While this change isnt that serious, why is there NO documentation, NO automatic migration, NOT ANY info about class changes.
Changes can be found here

Reproduction

/

Expected Behavior

Automatic Migration, Documentation

Actual Behavior

No migration, components not visible when class was used for styling

Environment

• Angular: 19.2.17
• CDK/Material: 19.2.19
• Browser: Chrome
• Operating System: Windows 11