K2: handle suspend anonymous functions properly in various compiler parts

#KT-58332 Fixed

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

@@ -0,0 +1,12 @@
+// FIR_IDENTICAL
+// FIR_DUMP
+
+fun foo() {
+    suspend fun() {
+        bar()
+    }
+}
+
+suspend fun bar() {
+
+}