Minor. Add tests with same JvmType in covariant override

compiler/testData/codegen/bytecodeText/coroutines/inlineClasses/noInlineClassBoxingInSuspendFunReturn_SameJvmType.kt

@@ -0,0 +1,31 @@
+// IGNORE_BACKEND: JVM_IR
+
+interface I
+
+inline class ICI(val i: I): I
+
+class Wrapper(val s: String): I
+
+suspend fun suspendICI(): ICI = ICI(Wrapper(""))
+suspend fun suspendI(): I = ICI(Wrapper(""))
+suspend fun <T> suspendGeneric(x: T): T = x
+
+fun useICString(x: ICI) {}
+fun useI(x: I) {}
+
+suspend fun test() {
+    useICString(suspendICI())
+    useICString(suspendGeneric(ICI(Wrapper(""))))
+    useI(suspendI())
+    useI(suspendICI())
+}
+
+// -- 1 in 'suspendAny(): I = ICI("")'
+// -- 1 in 'useI(suspendICI())'
+// -- 1 in 'suspendGeneric(ICI(""))'
+// 3 INVOKESTATIC ICI\.box-impl
+
+// -- 1 in 'useICI(suspendGeneric(ICI("")))
+// -- 1 in 'equals-impl' for ICI
+// -- 2 in resume path of suspendICI
+// 4 INVOKEVIRTUAL ICI\.unbox-impl