[VISUALIZER] Change rendering of equality operator

compiler/visualizer/testData/uncommonCases/testFiles/overrideEquals.kt

@@ -0,0 +1,19 @@
+class A(val a: Int) {
+    override fun equals(other: Any?): Boolean {
+        if (other !is A) return false
+        return this.a == other.a
+    }
+}
+
+open class B(val b: Int) {
+    override fun equals(other: Any?): Boolean {
+        if (other !is B) return false
+        return this.b == other.b
+    }
+}
+
+class C(c: Int): B(c) {}
+
+val areEqual = A(10) == A(11)
+val areEqual2 = C(10) == C(11)
+val areEqual3 = A(10) == C(11)