Fixed EA-74848 + conversion was incorrect!

idea/testData/intentions/operatorToFunction/binarayNotEqNullable.kt

@@ -0,0 +1,5 @@
+fun foo(p1: String?, p2: String?) {
+    if (p1 <caret>!= p2) {
+
+    }
+}

idea/testData/intentions/operatorToFunction/binarayNotEqNullable.kt.after

@@ -0,0 +1,5 @@
+fun foo(p1: String?, p2: String?) {
+    if (!(p1?.equals(p2) ?: (p2 == null))) {
+
+    }
+}

idea/testData/intentions/operatorToFunction/binaryEqEqNonNullable.kt

@@ -0,0 +1,3 @@
+fun foo(a: String, b: String?) {
+    a <caret>== b
+}

idea/testData/intentions/operatorToFunction/binaryEqEqNonNullable.kt.after

@@ -0,0 +1,3 @@
+fun foo(a: String, b: String?) {
+    a.equals(b)
+}

idea/testData/intentions/operatorToFunction/binaryEqEqNullable.kt.after

@@ -1,3 +1,3 @@
 fun foo(a: String?, b: String?) {
-    a?.equals(b) ?: b == null
+    a?.equals(b) ?: (b == null)
 }