Add braces: don't move EOL comment when if statement is single statement

#KT-28619 Fixed

idea/testData/intentions/addBraces/addBracesForSingleStatementElseWithCommentBeneath.kt

@@ -0,0 +1,10 @@
+fun test(b: Boolean) {
+    if (b) foo(0)
+    else<caret>
+        while (true) {
+            foo(1)
+        }
+    // comment about call below
+}
+
+fun foo(i: Int) {}

idea/testData/intentions/addBraces/addBracesForSingleStatementElseWithCommentBeneath.kt.after

@@ -0,0 +1,11 @@
+fun test(b: Boolean) {
+    if (b) foo(0)
+    else {
+        while (true) {
+            foo(1)
+        }
+    }
+    // comment about call below
+}
+
+fun foo(i: Int) {}

idea/testData/intentions/addBraces/addBracesForSingleStatementIfWithCommentBeneath.kt

@@ -0,0 +1,10 @@
+fun test() {
+    if (false)<caret>
+        while (true) {
+            foo(1)
+        }
+    //comment about foo(2)
+    foo(2)
+}
+
+fun foo(i: Int) {}

idea/testData/intentions/addBraces/addBracesForSingleStatementIfWithCommentBeneath.kt.after

@@ -0,0 +1,11 @@
+fun test() {
+    if (false) {
+        while (true) {
+            foo(1)
+        }
+    }
+    //comment about foo(2)
+    foo(2)
+}
+
+fun foo(i: Int) {}

idea/testData/intentions/addBraces/addBracesForSingleStatementIfWithCommentBeneath2.kt

@@ -0,0 +1,9 @@
+fun test() {
+    if (false)<caret>
+        while (true)
+            foo(1)
+    //comment about foo(2)
+    foo(2)
+}
+
+fun foo(i: Int) {}

idea/testData/intentions/addBraces/addBracesForSingleStatementIfWithCommentBeneath2.kt.after

@@ -0,0 +1,10 @@
+fun test() {
+    if (false) {
+        while (true)
+            foo(1)
+    }
+    //comment about foo(2)
+    foo(2)
+}
+
+fun foo(i: Int) {}