Add test for questionable chained fun -> suspend conversion

compiler/testData/diagnostics/tests/suspendConversion/chainedFunSuspendConversionForSimpleExpression.fir.kt

@@ -0,0 +1,14 @@
+// !LANGUAGE: +SuspendConversion
+// !DIAGNOSTICS: -UNUSED_PARAMETER
+
+fun interface SuspendRunnable {
+    suspend fun invoke()
+}
+
+fun foo(s: SuspendRunnable) {}
+
+fun test(f: () -> Unit) {
+    foo { }
+    <!INAPPLICABLE_CANDIDATE!>foo<!>(f)
+}
+

compiler/testData/diagnostics/tests/suspendConversion/chainedFunSuspendConversionForSimpleExpression.kt

@@ -0,0 +1,13 @@
+// !LANGUAGE: +SuspendConversion
+// !DIAGNOSTICS: -UNUSED_PARAMETER
+
+fun interface SuspendRunnable {
+    suspend fun invoke()
+}
+
+fun foo(s: SuspendRunnable) {}
+
+fun test(f: () -> Unit) {
+    foo { }
+    foo(<!TYPE_MISMATCH!>f<!>)
+}

compiler/testData/diagnostics/tests/suspendConversion/chainedFunSuspendConversionForSimpleExpression.txt

@@ -0,0 +1,11 @@
+package
+
+public fun foo(/*0*/ s: SuspendRunnable): kotlin.Unit
+public fun test(/*0*/ f: () -> kotlin.Unit): kotlin.Unit
+
+public fun interface SuspendRunnable {
+    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 abstract suspend fun invoke(): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}