KT-15871 Unnecessary boxing for equality operator on inlined primitive values

Allow kotlin.jvm.internal.Intrinsics#areEqual for boxed values.
Rewrite to primitive equality.

NB we can't do that for Float and Double, because java.lang.Float#equals
and java.lang.Double#equals behave differently from primitive equality comparisons.

compiler/testData/codegen/light-analysis/boxingOptimization/explicitEqualsOnDouble.txt

@@ -0,0 +1,5 @@
+@kotlin.Metadata
+public final class ExplicitEqualsOnDoubleKt {
+    public final static @org.jetbrains.annotations.NotNull method box(): java.lang.String
+    public final static method equals1(p0: double, p1: double): boolean
+}

compiler/testData/codegen/light-analysis/boxingOptimization/kt15871.txt

@@ -0,0 +1,5 @@
+@kotlin.Metadata
+public final class Kt15871Kt {
+    public final static @org.jetbrains.annotations.NotNull method box(): java.lang.String
+    public final static method getAndCheck(@org.jetbrains.annotations.NotNull p0: kotlin.jvm.functions.Function0, @org.jetbrains.annotations.NotNull p1: kotlin.jvm.functions.Function0): boolean
+}

compiler/testData/codegen/light-analysis/ieee754/safeCall.txt

@@ -1,4 +1,5 @@
 @kotlin.Metadata
 public final class SafeCallKt {
     public final static @org.jetbrains.annotations.NotNull method box(): java.lang.String
+    public final static method useBoxed(@org.jetbrains.annotations.Nullable p0: java.lang.Object): void
 }