AGP 9.0 with builtInKotlin doesn't work with ObjectBox

[ravibpatel]

Build info

• ObjectBox version: 5.1.0
• OS: AGP 9.0
• Device/ABI/architecture: [e.g. Galaxy S23 | arm64-v8a | x86-64 ]

Steps to reproduce

Using built in Kotlin introduced in AGP 9.0 doesn't work with ObjectBox. I get "Unresolved reference 'MyObjectBox'" error.