Formatter: fix line break between declarations with comment

#KT-12490 Fixed
#KT-35088 Fixed

idea/testData/formatter/EmptyLineBetweeSecondaryConstructors.kt

@@ -0,0 +1,10 @@
+class Some(b: Boolean) {
+    // Comment.
+    constructor(b: Int) : this(b == 0)
+    /**
+     * test
+     * 2
+     */
+    constructor(b: String) : this(b.isEmpty())
+    constructor(b: Long) : this(b == 0L)
+}