Debugger: Fix "smart step into" for library declarations (KT-33303)

idea/jvm-debugger/jvm-debugger-test/test/org/jetbrains/kotlin/idea/debugger/test/KotlinSteppingTestGenerated.java

@@ -1261,6 +1261,11 @@ public class KotlinSteppingTestGenerated extends AbstractKotlinSteppingTest {
             runTest("idea/jvm-debugger/jvm-debugger-test/testData/stepping/custom/smartStepIntoWithOverrides.kt");
         }
 
+        @TestMetadata("stepIntoLibWithSources.kt")
+        public void testStepIntoLibWithSources() throws Exception {
+            runTest("idea/jvm-debugger/jvm-debugger-test/testData/stepping/custom/stepIntoLibWithSources.kt");
+        }
+
         @TestMetadata("stepIntoStdlibInlineFun2step.kt")
         public void testStepIntoStdlibInlineFun2step() throws Exception {
             runTest("idea/jvm-debugger/jvm-debugger-test/testData/stepping/custom/stepIntoStdlibInlineFun2step.kt");

idea/jvm-debugger/jvm-debugger-test/testData/stepping/custom/stepIntoLibWithSources.kt

@@ -0,0 +1,10 @@
+package stepIntoLibWithSources
+
+import java.io.StringReader
+
+fun main() {
+    //Breakpoint!
+    val text = StringReader("OK").readText()
+}
+
+// SMART_STEP_INTO_BY_INDEX: 2

idea/jvm-debugger/jvm-debugger-test/testData/stepping/custom/stepIntoLibWithSources.out

@@ -0,0 +1,8 @@
+LineBreakpoint created at stepIntoLibWithSources.kt:7
+Run Java
+Connected to the target VM
+stepIntoLibWithSources.kt:7
+ReadWrite.!EXT!
+Disconnected from the target VM
+
+Process finished with exit code 0