[FIR] Prohibit suspend anonymous functions in statement position

^KT-62018 Fixed
^KT-62019

compiler/fir/analysis-tests/testData/resolve/diagnostics/suspendAnonymousFunction.kt

@@ -0,0 +1,11 @@
+// ISSUE: KT-62018, KT-62019
+
+fun take(f: suspend () -> Unit) {}
+
+fun test_1() {
+    <!ANONYMOUS_SUSPEND_FUNCTION!>suspend<!> fun() {}
+}
+
+fun test_2() {
+    take(<!UNRESOLVED_REFERENCE!>suspend<!><!SYNTAX!><!> <!TOO_MANY_ARGUMENTS!>fun () {}<!>)
+}