bug(expansion panel): height doesnt resize in safari while expanded

### 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

height of the expansion panel doesnt resize in safari while the panel is expanded

in chrome it works OK

### Reproduction

StackBlitz link: https://stackblitz.com/edit/fcr7qrn2?file=src%2Fexample%2Fexpansion-overview-example.html

Steps to reproduce:
1. resize the window while the panel is open

### Expected Behavior

the expansion panel body height should resize in safari too, just like it does in chrome

### Actual Behavior

the expansion panel body height doesnt resize in safari and content overflows

(note: if i close it and open it again the height is fixed)

### Environment

- Angular: ^19.2.0
- CDK/Material: ^19.2.0
- Browser(s): Safari
- Operating System (e.g. Windows, macOS, Ubuntu): macOS

StackBlitz の再現環境、特に src/example/expansion-overview-example.html から始め、Safari で展開パネルを開いた状態でウィンドウのサイズを変更して問題を再現します。Chrome と動作を比較し、展開されたパネルの本体がコンテンツをオーバーフローさせずにリサイズされ、閉じて再度開く必要がないことを確認します。

索引モデルが issue の本文から書いたものです。