Improve error message for ambiguous names in override application

[MateuszKubuszok]

When field names passed in overrides are ambiguous (due to name comparator used), we currently use this piece of code:

chimney/chimney/src/main/scala/io/scalaland/chimney/internal/compiletime/derivation/transformer/rules/TransformProductToProductRuleModule.scala

Lines 172 to 185 in a55f1df

	runtimeField match {
	case TransformerOverride.Unused =>
	".withFieldUnused(...)"
	case TransformerOverride.Const(_) =>
	s".withFieldConst(_.$anotherToName, ...)"
	case TransformerOverride.ConstPartial(_) =>
	s".withFieldConstPartial(_.$anotherToName, ...)"
	case TransformerOverride.Computed(_, _, _) =>
	s".withFieldComputed(_.$anotherToName, ...)"
	case TransformerOverride.ComputedPartial(_, _, _) =>
	s".withFieldComputedPartial(_.$anotherToName, ...)"
	case TransformerOverride.Renamed(sourcePath, _) =>
	s".withFieldRenamed($sourcePath, _.$anotherToName})"
	}

It always returns _.fieldName even if the field is actually nested, and it never shows example for scoped overrides defined (e.g. withFieldComputedFrom(_.from)(_.to, ...)).

It could be improved, with tests, printing the right values from the journal etc.