[NI] Set correct applicability for unknown lambda parameter diagnostic

Unknown lambda parameter should not change resolve.
So the new diagnostic should not have error status; othrewise candidates with lower priority but more specific expected type may be chosen.

KT-34335 Fixed
See also KT-36264

compiler/fir/resolve/tests/org/jetbrains/kotlin/fir/FirOldFrontendDiagnosticsTestGenerated.java

@@ -10161,6 +10161,11 @@ public class FirOldFrontendDiagnosticsTestGenerated extends AbstractFirOldFronte
             runTest("compiler/testData/diagnostics/tests/inference/reportAboutUnresolvedReferenceAsUnresolved.kt");
         }
 
+        @TestMetadata("resolveWithUnknownLambdaParameterType.kt")
+        public void testResolveWithUnknownLambdaParameterType() throws Exception {
+            runTest("compiler/testData/diagnostics/tests/inference/resolveWithUnknownLambdaParameterType.kt");
+        }
+
         @TestMetadata("starApproximation.kt")
         public void testStarApproximation() throws Exception {
             runTest("compiler/testData/diagnostics/tests/inference/starApproximation.kt");

compiler/resolution/src/org/jetbrains/kotlin/resolve/calls/model/KotlinCallDiagnostics.kt

@@ -213,7 +213,7 @@ class ResolvedToSamWithVarargDiagnostic(val argument: KotlinCallArgument) : Kotl
 class NotEnoughInformationForLambdaParameter(
     val lambdaArgument: LambdaKotlinCallArgument,
     val parameterIndex: Int
-) : KotlinCallDiagnostic(INAPPLICABLE) {
+) : KotlinCallDiagnostic(RESOLVED) {
     override fun report(reporter: DiagnosticReporter) {
         reporter.onCallArgument(lambdaArgument, this)
     }

compiler/testData/diagnostics/tests/inference/resolveWithUnknownLambdaParameterType.fir.kt

@@ -0,0 +1,11 @@
+// !DIAGNOSTICS: -UNUSED_PARAMETER -UNUSED_ANONYMOUS_PARAMETER
+
+fun baz(f: (Int) -> String) {}
+
+object Foo {
+    fun baz(vararg anys: Any?) {}
+
+    fun testResolvedToMember() {
+        baz({ x -> "" }) // should be an error
+    }
+}

compiler/testData/diagnostics/tests/inference/resolveWithUnknownLambdaParameterType.kt

@@ -0,0 +1,11 @@
+// !DIAGNOSTICS: -UNUSED_PARAMETER -UNUSED_ANONYMOUS_PARAMETER
+
+fun baz(f: (Int) -> String) {}
+
+object Foo {
+    fun baz(vararg anys: Any?) {}
+
+    fun testResolvedToMember() {
+        baz({ <!CANNOT_INFER_PARAMETER_TYPE!>x<!> -> "" }) // should be an error
+    }
+}

compiler/testData/diagnostics/tests/inference/resolveWithUnknownLambdaParameterType.txt

@@ -0,0 +1,12 @@
+package
+
+public fun baz(/*0*/ f: (kotlin.Int) -> kotlin.String): kotlin.Unit
+
+public object Foo {
+    private constructor Foo()
+    public final fun baz(/*0*/ vararg anys: kotlin.Any? /*kotlin.Array<out kotlin.Any?>*/): kotlin.Unit
+    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 final fun testResolvedToMember(): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}

compiler/tests/org/jetbrains/kotlin/checkers/DiagnosticsTestGenerated.java

@@ -10168,6 +10168,11 @@ public class DiagnosticsTestGenerated extends AbstractDiagnosticsTest {
                 runTest("compiler/testData/diagnostics/tests/inference/reportAboutUnresolvedReferenceAsUnresolved.kt");
             }
 
+            @TestMetadata("resolveWithUnknownLambdaParameterType.kt")
+            public void testResolveWithUnknownLambdaParameterType() throws Exception {
+                runTest("compiler/testData/diagnostics/tests/inference/resolveWithUnknownLambdaParameterType.kt");
+            }
+
             @TestMetadata("starApproximation.kt")
             public void testStarApproximation() throws Exception {
                 runTest("compiler/testData/diagnostics/tests/inference/starApproximation.kt");

compiler/tests/org/jetbrains/kotlin/checkers/javac/DiagnosticsUsingJavacTestGenerated.java

@@ -10163,6 +10163,11 @@ public class DiagnosticsUsingJavacTestGenerated extends AbstractDiagnosticsUsing
                 runTest("compiler/testData/diagnostics/tests/inference/reportAboutUnresolvedReferenceAsUnresolved.kt");
             }
 
+            @TestMetadata("resolveWithUnknownLambdaParameterType.kt")
+            public void testResolveWithUnknownLambdaParameterType() throws Exception {
+                runTest("compiler/testData/diagnostics/tests/inference/resolveWithUnknownLambdaParameterType.kt");
+            }
+
             @TestMetadata("starApproximation.kt")
             public void testStarApproximation() throws Exception {
                 runTest("compiler/testData/diagnostics/tests/inference/starApproximation.kt");