FIR: Update test data (repeated diagnostics)

They are a bit redundant, but it needs additional work to be done
to avoid them

compiler/testData/diagnostics/tests/inference/reportingImprovements/FunctionPlaceholder.fir.kt

@@ -7,9 +7,9 @@ fun <T, R> foo(a: A<T, R>) = a
 fun <T, R> bar(f: (T) -> R) = f
 
 fun test() {
-    foo { <!ARGUMENT_TYPE_MISMATCH, UNRESOLVED_REFERENCE!>it<!> }
-    foo { x -> <!ARGUMENT_TYPE_MISMATCH!>x<!>}
-    foo { x: Int -> <!ARGUMENT_TYPE_MISMATCH!>x<!>}
+    foo <!ARGUMENT_TYPE_MISMATCH!>{ <!ARGUMENT_TYPE_MISMATCH, UNRESOLVED_REFERENCE!>it<!> }<!>
+    foo <!ARGUMENT_TYPE_MISMATCH!>{ x -> x}<!>
+    foo <!ARGUMENT_TYPE_MISMATCH!>{ x: Int -> x}<!>
 
     bar { it <!UNRESOLVED_REFERENCE!>+<!> 1 }
     bar { x -> x <!UNRESOLVED_REFERENCE!>+<!> 1}

compiler/testData/diagnostics/tests/inference/reportingImprovements/NoAmbiguityForDifferentFunctionTypes.fir.kt

@@ -0,0 +1,17 @@
+// !WITH_NEW_INFERENCE
+
+package a
+
+interface Closeable {}
+class C : Closeable {}
+
+fun <T: Closeable, R> T.foo(block: (T)-> R) = block
+
+fun <T: Closeable, R> T.foo(block: (T, T)-> R) = block
+
+fun main() {
+    C().foo { // no ambiguity here
+        www ->
+        <!ARGUMENT_TYPE_MISMATCH, UNRESOLVED_REFERENCE!>xs<!>
+    }
+}

compiler/testData/diagnostics/tests/inference/reportingImprovements/NoAmbiguityForDifferentFunctionTypes.kt

@@ -1,4 +1,3 @@
-// FIR_IDENTICAL
 // !WITH_NEW_INFERENCE
 
 package a