bug(mat-form-field): form field with mat-label and without mat-label not vertically aligned

### Is this a regression?

- [X] Yes, this behavior used to work in the previous version

### The previous version in which this bug was not present was

14

### Description

When two mat-form-fields are in a div and one has a mat-label while the other one hasn't, the fields are not aligned vertically.

The `display` property on `.mat-form-field` was changed from `inline-block` to `inline-flex`. Changing it back seems to solve the issue.

### Reproduction

https://stackblitz.com/edit/cjzlva?file=src%2Fapp%2Fform-field-overview-example.html

### Expected Behavior

Form fields are aligned vertically

### Actual Behavior

Forms fields are not aligned

### Environment

- Angular: 15.2.9 / 16.0.1
- CDK/Material: 15.2.9 / 16.0.1
- Browser(s): Chrome 113 / FireFox 113
- Operating System (e.g. Windows, macOS, Ubuntu): Windows

Öffne die verknüpfte StackBlitz-Reproduktion und vergleiche die beiden mat-form-fields. Untersuche anschließend die display-Regel von .mat-form-field, die von inline-block zu inline-flex geändert wurde. Bestätige den Fix, indem du prüfst, ob Felder mit und ohne mat-label in den gemeldeten Angular Material-Versionen und Browsern vertikal ausgerichtet sind.

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