Fix a compatibility issue with AnnotationDescriptor

The `getSourceForArgument` method should be in the interface,
but adding it is a breaking change for Java usages,
since the module is not built with -Xjvm-default (KT-54749).

Move the method to an extension. This doesn't change the behavior,
since it was only ever called on LazyAnnotationDescriptor.

compiler/frontend/src/org/jetbrains/kotlin/resolve/lazy/descriptors/LazyAnnotations.kt

@@ -125,7 +125,7 @@ class LazyAnnotationDescriptor(
         valueArgumentsWithSourceInfo.mapValues { it.value.first }
     }
 
-    override fun getSourceForArgument(name: Name): SourceElement =
+    fun getSourceForArgument(name: Name): SourceElement =
         valueArgumentsWithSourceInfo[name]?.second ?: SourceElement.NO_SOURCE
 
     override fun forceResolveAllContents() {
@@ -149,3 +149,6 @@ class LazyAnnotationDescriptor(
         override fun toString(): String = "${name.asString()} declared in LazyAnnotations.kt"
     }
 }
+
+fun AnnotationDescriptor.getSourceForArgument(name: Name): SourceElement =
+    (this as? LazyAnnotationDescriptor)?.getSourceForArgument(name) ?: SourceElement.NO_SOURCE

compiler/ir/ir.psi2ir/src/org/jetbrains/kotlin/psi2ir/generators/ConstantValueGeneratorImpl.kt

@@ -15,6 +15,7 @@ import org.jetbrains.kotlin.ir.util.TypeTranslator
 import org.jetbrains.kotlin.name.Name
 import org.jetbrains.kotlin.psi.psiUtil.endOffset
 import org.jetbrains.kotlin.psi.psiUtil.startOffset
+import org.jetbrains.kotlin.resolve.lazy.descriptors.getSourceForArgument
 import org.jetbrains.kotlin.resolve.source.getPsi
 
 class ConstantValueGeneratorImpl(