bug(list): Lack of padding in list-option if hideSingleSelectionIndicator and togglePosition before

### Is this a regression?

No

### Description


### Reproduction

StackBlitz link: https://stackblitz.com/edit/8qmgxasf?file=src%2Fexample%2Flist-overview-example.html

### Expected Behavior

Left padding on item should be included if togglePosition="before" and hideSingleSelectionIndicator="true"

### Actual Behavior

Left padding is not included

### Environment

- Angular: 19.2.16
- CDK/Material: 19.2.10
- Browser(s): *
- Operating System (e.g. Windows, macOS, Ubuntu): Windows

Open the linked StackBlitz reproduction and begin with src/example/list-overview-example.html, focusing on the list-option configuration using togglePosition="before" and hideSingleSelectionIndicator="true". Verify the missing left padding against the expected behavior, then confirm the corrected spacing in the same reproduction across the stated Angular and CDK/Material versions.

Written by the indexing model from the issue text.