FIR: Fix false positive INAPPLICABLE_INFIX_MODIFIER

compiler/testData/diagnostics/tests/functionLiterals/kt4529.fir.kt

@@ -1,19 +0,0 @@
-//KT-4529 Lambdas are analyzed improperly in an infix call nested inside a println
-
-class G {
-    <!INAPPLICABLE_INFIX_MODIFIER!>infix fun foo(bar: (Int) -> Int) = bar<!>
-}
-
-fun main() {
-    use(
-            G().foo {it + 11} // no error
-    )
-    use(
-            G() foo {it + 11} // ERROR
-    )
-    use(
-            G() foo ({it + 1}) // 2 ERRORs
-    )
-}
-
-fun use(a: Any?) = a

compiler/testData/diagnostics/tests/functionLiterals/kt4529.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 //KT-4529 Lambdas are analyzed improperly in an infix call nested inside a println
 
 class G {

compiler/testData/diagnostics/tests/functionLiterals/kt6541_extensionForExtensionFunction.fir.kt

@@ -4,7 +4,7 @@ interface Foo
 fun (Foo.() -> Unit).invoke(b : Foo.() -> Unit)  {}
 
 object Z {
-    <!INAPPLICABLE_INFIX_MODIFIER!>infix fun add(b : Foo.() -> Unit) : Z = Z<!>
+    infix fun add(b : Foo.() -> Unit) : Z = Z
 }
 
 val t2 = Z <!INAPPLICABLE_CANDIDATE!>add<!> { } { }