[FIR] Split primary constructor parameter scope into two different

In init block or property initializers,
for `val x` declared in primary constructor,
`x` reference is now resolved to property, not to parameter.
So we need two different scopes for primary constructor,
one for 'pure' parameters and another one for all parameters,
including val/var ones.

#KT-42844 Fixed

compiler/testData/diagnostics/tests/smartCasts/openInSealed.fir.kt

@@ -2,7 +2,7 @@ sealed class My(open val x: Int?) {
     init {
         if (x != null) {
             // Should be error: property is open
-            x.hashCode()
+            x.<!INAPPLICABLE_CANDIDATE!>hashCode<!>()
         }
     }
 }