Get rid of redundant boxing when comparing inline class instances

^KT-33722: Fixed

compiler/testData/codegen/bytecodeText/inlineClasses/equalsIsCalledByInlineClass.kt

@@ -9,6 +9,10 @@ fun testZ(z: Z, a: Any?) = z.equals(a)
 fun testNZ(z: Z?) = z?.equals(z)
 
 // @TestKt.class:
+// JVM_IR_TEMPLATES
 // 0 INVOKESTATIC Z\$Erased\.equals
 // 0 INVOKESTATIC Z\-Erased\.equals
-// 3 INVOKESTATIC Z\.equals-impl \(ILjava/lang/Object;\)Z
+// 1 INVOKESTATIC Z\.equals-impl0 \(II\)Z
+// 1 INVOKESTATIC Z\.equals-impl \(ILjava/lang/Object;\)Z
+// 1 INVOKEVIRTUAL Z.equals
+// 0 INVOKEVIRTUAL Z.unbox-impl

compiler/testData/codegen/bytecodeText/inlineClasses/kt33722.kt

@@ -0,0 +1,17 @@
+// WITH_STDLIB
+// TARGET_BACKEND: JVM_IR
+
+fun foo() {
+    val result = Result.success("yes!")
+    val other = Result.success("nope")
+
+    result == other
+    result != other
+
+    result.equals(other)
+    !result.equals(other)
+}
+
+// CHECK_BYTECODE_TEXT
+// 0 INVOKESTATIC kotlin/Result.box-impl
+// 4 INVOKESTATIC kotlin/Result.equals-impl0