fix(progress-bar): avoid ExpressionChangedAfterItHasBeenCheckedError …

[jamshidimasoud721]

Problem:

When changing mode of mat-progress-bar inside ngAfterViewInit, Angular throws ExpressionChangedAfterItHasBeenCheckedError.

Solution:

Wrapped the mode change in a setTimeout and used ChangeDetectorRef.detectChanges() to notify Angular properly.

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[eneajaho]

Converting to a signal would fix the issue in a nicer way.

[crisbeto]

Closing since we generally don't have examples for cases like this.

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