IR: Process script with LDL as if it is a function body

#KT-46645 fixed
#KT-48025 fixed

compiler/testData/codegen/box/script/localCaptureTests.kt

@@ -0,0 +1,31 @@
+// TARGET_BACKEND: JVM
+// IGNORE_BACKEND_FIR: JVM_IR
+// IGNORE_LIGHT_ANALYSIS
+// WITH_RUNTIME
+// FILE: test.kt
+
+fun box(): String =
+    Script.Build.Debug.run { "${c0()}${c1()}" }
+
+// FILE: script.kts
+
+interface Base {
+    val v: String
+
+    fun c0(): Char {
+        fun getC0() = v[0]
+        return getC0()
+    }
+}
+
+enum class Build(override val v: String): Base {
+    Debug("OK"),
+    Release("NO");
+
+    fun c1(): Char {
+        val g = object {
+            val c1 = v[1]
+        }
+        return g.c1
+    }
+}

compiler/testData/codegen/script/kt48025.kts

@@ -0,0 +1,14 @@
+
+val p = 0
+
+class ReducedFraction() {
+    fun plus1() = reducedFractionOf(p)
+    val y = 1
+}
+
+fun reducedFractionOf(a: Int) {
+}
+
+val c = ReducedFraction()
+val x = c.y
+// expected: x: 1