Replace equals with == involving FP types: handle possible smart casts

This fixes two relevant tests with smart casts
#KT-25933 Fixed

idea/testData/inspectionsLocal/conventionNameCalls/replaceCallWithBinaryOperator/equalsDoubleSmartCastFromGeneric.kt

@@ -0,0 +1,4 @@
+// FIX: Replace total order equality with IEEE 754 equality
+
+fun <T> test(a: T, b: T) =
+    a is Double && b is Double && a.<caret>equals(b)

idea/testData/inspectionsLocal/conventionNameCalls/replaceCallWithBinaryOperator/equalsDoubleSmartCastFromGeneric.kt.after

@@ -0,0 +1,4 @@
+// FIX: Replace total order equality with IEEE 754 equality
+
+fun <T> test(a: T, b: T) =
+    a is Double && b is Double && a == b