inspectTypeRepr does not support FlexibleTypes

[HarrisL2]

Issue minimized from a run of the Open Community Build

When using izumi-reflect in newer scala versions, the following error is emitted.

java.lang.RuntimeException: TYPEREPR, UNSUPPORTED: class dotty.tools.dotc.core.Types$FlexibleType - FlexibleType(OrType(TypeRef(ThisType(TypeRef(NoPrefix,module class api)),trait RedissonClient),TypeRef(ThisType(TypeRef(NoPrefix,module class scala)),class Null)),TypeRef(ThisType(TypeRef(NoPrefix,module class api)),trait RedissonClient))

This error is emitted from

izumi-reflect/izumi-reflect/izumi-reflect/src/main/scala-3/izumi/reflect/dottyreflection/Inspector.scala

Lines 153 to 157 in 8158368

	case o =>
	log(s"TYPEREPR UNSUPPORTED: $o")
	throw new RuntimeException(s"TYPEREPR, UNSUPPORTED: ${o.getClass} - $o")

and can be fixed by adding a new case for FlexibleType and recursing on the underlying type.

[neko-kai]

@HarrisL2 I think we can't add a case for it while still building for Scala 3.3 LTS. Reflection, probably?..

[HarrisL2]

Yes, that's understandable. The next LTS version, 3.9 is going to be out soon and FlexibleTypes will be available then, I just wanted to raise this issue in advance.

[pshirshov]

P/Rs are very welcome, even LLM-assisted ones - if the content is reasonable.