[Test] Save IR bytecode dumps from BytecodeListingHandler to .ir.txt file instead of _ir.txt

This is needed to keep consistency with other dumps and to allow
  test helper plugin to recognize those dumps

compiler/testData/codegen/bytecodeListing/annotations/kt9320.ir.txt

@@ -0,0 +1,50 @@
+@java.lang.annotation.Retention(value=RUNTIME)
+@kotlin.Metadata
+public annotation class Ann {
+    // source: 'kt9320.kt'
+}
+
+@kotlin.annotation.Target(allowedTargets=[EXPRESSION])
+@kotlin.annotation.Retention(value=SOURCE)
+@java.lang.annotation.Retention(value=SOURCE)
+@java.lang.annotation.Target(value=[])
+@kotlin.Metadata
+public annotation class AnnExpr {
+    // source: 'kt9320.kt'
+}
+
+@Ann
+@kotlin.Metadata
+public final class Kt9320Kt$foo$v$1 {
+    // source: 'kt9320.kt'
+    enclosing method Kt9320Kt.foo()V
+    inner (anonymous) class Kt9320Kt$foo$v$1
+    method <init>(): void
+}
+
+@kotlin.Metadata
+final class Kt9320Kt$foo$w$1 {
+    // source: 'kt9320.kt'
+    enclosing method Kt9320Kt.foo()V
+    public final static field INSTANCE: Kt9320Kt$foo$w$1
+    inner (anonymous) class Kt9320Kt$foo$w$1
+    static method <clinit>(): void
+    method <init>(): void
+    public final @Ann @org.jetbrains.annotations.NotNull method invoke(@org.jetbrains.annotations.NotNull p0: My): java.lang.Integer
+    public synthetic bridge method invoke(p0: java.lang.Object): java.lang.Object
+}
+
+@kotlin.Metadata
+public final class Kt9320Kt {
+    // source: 'kt9320.kt'
+    inner (anonymous) class Kt9320Kt$foo$v$1
+    inner (anonymous) class Kt9320Kt$foo$w$1
+    public final static method foo(): void
+}
+
+@Ann
+@kotlin.Metadata
+public class My {
+    // source: 'kt9320.kt'
+    public method <init>(): void
+}