[IR, Tests] Add context receivers count to IR dump

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/util/DeepCopyIrTreeWithSymbols.kt

@@ -186,6 +186,7 @@ open class DeepCopyIrTreeWithSymbols(
             overriddenSymbols = declaration.overriddenSymbols.map {
                 symbolRemapper.getReferencedFunction(it) as IrSimpleFunctionSymbol
             }
+            contextReceiverParametersCount = declaration.contextReceiverParametersCount
             copyAttributes(declaration)
             transformFunctionChildren(declaration)
         }

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/util/DumpIrTree.kt

@@ -138,6 +138,12 @@ class DumpIrTreeVisitor(
             declaration.overriddenSymbols.dumpItems("overridden") { it.dump() }
             declaration.typeParameters.dumpElements()
             declaration.dispatchReceiverParameter?.accept(this, "\$this")
+
+            val contextReceiverParametersCount = declaration.contextReceiverParametersCount
+            if (contextReceiverParametersCount > 0) {
+                printer.println("contextReceiverParametersCount: $contextReceiverParametersCount")
+            }
+
             declaration.extensionReceiverParameter?.accept(this, "\$receiver")
             declaration.valueParameters.dumpElements()
             declaration.body?.accept(this, "")