FIR: add test for KT-51357

compiler/testData/diagnostics/testsWithStdLib/greater.fir.kt

@@ -0,0 +1,12 @@
+class Expression<T>(val x: T)
+
+class GreaterOp(val expr1: Expression<*>, val expr2: Expression<*>)
+
+fun <T : Comparable<T>, S : T?> Expression<in S>.greater(other: T): GreaterOp =
+    GreaterOp(this, Expression(other))
+
+fun foo(countExpr: Expression<Long>) {
+    <!NEW_INFERENCE_ERROR!>countExpr.greater(0)<!>
+    countExpr.greater("0")
+    countExpr.greater<String, Nothing>("0")
+}

compiler/testData/diagnostics/testsWithStdLib/greater.kt

@@ -0,0 +1,12 @@
+class Expression<T>(val x: T)
+
+class GreaterOp(val expr1: Expression<*>, val expr2: Expression<*>)
+
+fun <T : Comparable<T>, S : T?> Expression<in S>.greater(other: T): GreaterOp =
+    GreaterOp(this, Expression(other))
+
+fun foo(countExpr: Expression<Long>) {
+    countExpr.greater(0)
+    countExpr.greater("0")
+    countExpr.greater<String, Nothing>("0")
+}

compiler/testData/diagnostics/testsWithStdLib/greater.txt

@@ -0,0 +1,21 @@
+package
+
+public fun foo(/*0*/ countExpr: Expression<kotlin.Long>): kotlin.Unit
+public fun </*0*/ T : kotlin.Comparable<T>, /*1*/ S : T?> Expression<in S>.greater(/*0*/ other: T): GreaterOp
+
+public final class Expression</*0*/ T> {
+    public constructor Expression</*0*/ T>(/*0*/ x: T)
+    public final val x: T
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+public final class GreaterOp {
+    public constructor GreaterOp(/*0*/ expr1: Expression<*>, /*1*/ expr2: Expression<*>)
+    public final val expr1: Expression<*>
+    public final val expr2: Expression<*>
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}