Function usesDeprecatedAssetsField

usesDeprecatedAssetsField(format: Format): boolean
Check if format uses deprecated assets_required field (for migration warnings)
Parameters
- format: Format
  The Format object
Returns boolean
true if using deprecated field, false if using new field or neither
Example
```
if (usesDeprecatedAssetsField(format)) {
  console.warn(`Format ${format.name} uses deprecated assets_required field`);
}
```
- Defined in src/lib/utils/format-assets.ts:141