bug(MatDatePicker): NativeDatePicker not using the correct format initially

[Ben555555]

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

No response

Description

When I use the following setup:

provideNativeDateAdapter({
            parse: {
              dateInput: 'DD.MM.YYYY',
            },
            display: {
              dateInput: 'DD.MM.YYYY',
              monthYearLabel: 'MMM YYYY',
              dateA11yLabel: 'LL',
              monthYearA11yLabel: 'MMMM YYYY',
            },
          }),
{
            provide: LOCALE_ID,
            useValue: 'de-CH'
        },

the DatePicker will show the date in the wrong format: "13.5.2025" instead of "13.05.2025". Why are the format options ignored?

Reproduction

StackBlitz link:
Steps to reproduce:
1.
2.

Expected Behavior

Date is formatted as "13.05.2025".

Actual Behavior

Date is formatted as "13.5.2025".

Environment

• Angular: 19.1.4
• CDK/Material: 19.1.5
• Browser(s): Chrome
• Operating System (e.g. Windows, macOS, Ubuntu): Windows 11