[JVM] Port line number tests to stepping framework.

Allow specifying JVM and JVM_IR as well as shared expectations.

Add the method name to the step.

Discard steps in synthetic methods.

compiler/testData/debug/stepping/defaultParameter.kt

@@ -0,0 +1,24 @@
+// FILE: test.kt
+
+class A {
+    fun computeParam() = 32
+
+    fun foo(param: Int = computeParam()) {
+    }
+}
+
+fun box() {
+    A().foo()
+}
+
+// FORCE_STEP_INTO
+// LINENUMBERS
+// test.kt:11 box
+// test.kt:3 <init>
+// test.kt:11 box
+// test.kt:6 foo$default (synthetic)
+// test.kt:4 computeParam
+// test.kt:6 foo$default (synthetic)
+// test.kt:7 foo
+// test.kt:6 foo$default (synthetic)
+// test.kt:12 box