[JS IR] Emit original names for local vars to sourcemaps

#KT-35655 Fixed

compiler/testData/debug/localVariables/catchClause.kt

@@ -4,16 +4,27 @@ fun box() {
         var a = 1
         a --
         a /= a
+        throw ArithmeticException() // Division by 0 doesn't throw in JS, so throw explicitly
     } catch(e : Throwable) {
         e.printStackTrace()
     }
 }
 
-// EXPECTATIONS
+// EXPECTATIONS JVM JVM_IR
 // test.kt:3 box:
 // test.kt:4 box:
 // test.kt:5 box: a:int=1:int
 // test.kt:6 box: a:int=0:int
-// test.kt:7 box:
-// test.kt:8 box: e:java.lang.Throwable=java.lang.ArithmeticException
-// test.kt:10 box:
+// test.kt:8 box:
+// test.kt:9 box: e:java.lang.Throwable=java.lang.ArithmeticException
+// test.kt:11 box:
+
+// EXPECTATIONS JS_IR
+// test.kt:4 box:
+// test.kt:5 box: a=1:number
+// test.kt:5 box: a=1:number
+// test.kt:6 box: a=0:number
+// test.kt:7 box: a=0:number
+// test.kt:8 box: a=0:number
+// test.kt:8 box: a=0:number
+// test.kt:9 box: a=0:number, e=kotlin.ArithmeticException