[JS IR] Improve debug info precision for blocks

Namely:
- Generate debug info for closing braces, which allows the breakpoints
  set on closing braces to be hit
- Generate debug info for 'if' and 'try/catch' statements.

KT-46276

compiler/testData/debug/stepping/namedCallableReference.kt

@@ -32,8 +32,10 @@ fun g() {}
 // EXPECTATIONS JS_IR
 // test.kt:3 box
 // test.kt:4 box
-// test.kt:4 g$ref
 // test.kt:4 box
 // test.kt:8 f
 // test.kt:4 g$ref$lambda
-// test.kt:4 g$ref$lambda
+// test.kt:11 g
+// test.kt:4 g$ref$lambda
+// test.kt:9 f
+// test.kt:5 box