[JVM+IR] Unify new debugger tests expectations

This commit unifies the expectation format between the stepping and
LVT tests in the new debugging test harness.

Furthermore, it introduces a compression of runs of locations without
linenumbers. These default to showing as bytecode offsets from
previous line number, which overspecifies the tests: the bytecodes
chosen should not be constrained by a debugging step test.

compiler/tests/org/jetbrains/kotlin/codegen/debugInformation/IrLocalVariableTestGenerated.java

@@ -103,5 +103,11 @@ public class IrLocalVariableTestGenerated extends AbstractIrLocalVariableTest {
         public void testSimple() throws Exception {
             runTest("compiler/testData/debug/localVariables/suspend/simple.kt");
         }
+
+        @Test
+        @TestMetadata("underscoreNames.kt")
+        public void testUnderscoreNames() throws Exception {
+            runTest("compiler/testData/debug/localVariables/suspend/underscoreNames.kt");
+        }
     }
 }

compiler/tests/org/jetbrains/kotlin/codegen/debugInformation/LocalVariableTestGenerated.java

@@ -103,5 +103,11 @@ public class LocalVariableTestGenerated extends AbstractLocalVariableTest {
         public void testSimple() throws Exception {
             runTest("compiler/testData/debug/localVariables/suspend/simple.kt");
         }
+
+        @Test
+        @TestMetadata("underscoreNames.kt")
+        public void testUnderscoreNames() throws Exception {
+            runTest("compiler/testData/debug/localVariables/suspend/underscoreNames.kt");
+        }
     }
 }