[Gradle, JS] Fix formatting in Gradle Kotlin/JS wizard

^KT-40149 fixed

idea/idea-gradle/src/org/jetbrains/kotlin/idea/configuration/GradleKotlinFrameworkSupportProvider.kt

@@ -213,10 +213,19 @@ abstract class GradleKotlinJSFrameworkSupportProvider(
                     (
                             additionalSubTargetSettings()
                                 ?.lines()
-                                ?.joinToString("\n", "\n", "\n") { "            $it" } ?: ""
+                                ?.joinToString("\n", "\n", "\n") { line ->
+                                    if (line.isBlank()) {
+                                        line
+                                    } else {
+                                        line
+                                            .prependIndent()
+                                            .prependIndent()
+                                            .prependIndent()
+                                    }
+                                } ?: "\n"
                             ) +
                     """
-                           }
+                        }
                         binaries.executable()
                     }
                 }

idea/idea-gradle/src/org/jetbrains/kotlin/idea/configuration/GradleKotlinFrameworkSupportProviderUtils.kt

@@ -78,7 +78,7 @@ internal fun browserConfiguration(): String {
             useKarma {
                 useChromeHeadless()
                 webpackConfig.cssSupport.enabled = true
-           }
+            }
         }
     """.trimIndent()
 }

idea/idea-gradle/src/org/jetbrains/kotlin/idea/configuration/KotlinDslGradleKotlinFrameworkSupportProvider.kt

@@ -188,12 +188,19 @@ abstract class AbstractKotlinDslGradleKotlinJSFrameworkSupportProvider(
                     (
                             additionalSubTargetSettings()
                                 ?.lines()
-                                ?.joinToString("\n", "\n", "\n") {
+                                ?.joinToString("\n", "\n", "\n") { line: String ->
-                                    "            $it"
+                                    if (line.isBlank()) {
-                                } ?: ""
+                                        line
+                                    } else {
+                                        line
+                                            .prependIndent()
+                                            .prependIndent()
+                                            .prependIndent()
+                                    }
+                                } ?: "\n"
                             ) +
                     """
-                           }
+                        }
                         binaries.executable()
                     }
                 }