bug(MatDialog): Regression with aria-modal

[antoinetb12]

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

13.x

Description

Since Angular 14 the aria-modal attribute in the mat-dialog-container is configurable, but the option is not present in the configuration class : MatDialogConfig.
As such we can't have aria-modal in the mat-dialog-container

Reproduction

Steps to reproduce:

1. open a dialog with MatDialog

Expected Behavior

• aria-modal="true" is present in the mat-dialog-container

or

• presence of an ariaModal variable in the MatDialogConfig class

Actual Behavior

• aria-modal is not present in the mat-dialog-container

or

• ariaModal is not known in the MatDialogConfig class

Environment

• Angular: 14.1.1
• CDK/Material: 14.1.1
• Browser(s): Chrome
• Operating System (e.g. Windows, macOS, Ubuntu): Windows

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