Get image only from cache without downloading

## 🚀 Feature Requests

Should work the same as getFileFromCache

### Contextualize the feature

Not always everyone need to download image through your plugin. For example if someone is using S3 bucket

### Describe the feature
The same as getFileFromCache but with resizing

### Platforms affected (mark all that apply)
- [x] :iphone: iOS
- [x] :robot: Android

Start by reading the existing getFileFromCache entry point and trace how cached images are handled on iOS and Android. Define completion as providing the equivalent cache-only image retrieval while supporting resizing and avoiding a download; the issue does not name specific files or tests.

索引モデルが issue の本文から書いたものです。