FIR: Preserve K1 behavior for rawTypeValue ?: nothingTypedValue

It's been approximated to the non-raw version back then

^KT-54526 Fixed

compiler/testData/diagnostics/tests/platformTypes/rawTypes/lostRawTypeAfterElvis.kt

@@ -0,0 +1,22 @@
+// SKIP_TXT
+// FIR_IDENTICAL
+// FILE: Generic.java
+public class Generic<T> {
+    public static class ML<E> {}
+    public static Generic create() { return null; }
+    public <E> E foo(ML<E> w) { }
+}
+
+// FILE: main.kt
+import Generic.ML
+
+fun main(w: ML<String>) {
+    val generic2 = Generic.create() ?: return
+
+    // Not enough information to infer E (both K1 and K2 after KT-41794 is done)
+    // Because generic information is erased from the raw type scope of `generic1`
+    // But the parameter E is still there (that is a questionable behavior)
+
+    // `generic2` does have just non-raw type `Generic<Any!>..Generic<*>?`
+    generic2.foo(w).length // OK in K1, fails in K2 after KT-41794 is done
+}