FIR checker: report SUPERTYPE_NOT_INITIALIZED

Combined this and the checker of
SUPERTYPE_INITIALIZED_WITHOUT_PRIMARY_CONSTRUCTOR together.

Also fixed SUPERTYPE_INITIALIZED_WITHOUT_PRIMARY_CONSTRUCTOR incorrectly
repoted as warning instead of error.

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

@@ -16,7 +16,7 @@ fun test(z: Int, c: Char) {}
 
 }<!>
 
-<!REDECLARATION!>class B : A {
+<!REDECLARATION!>class B : <!SUPERTYPE_NOT_INITIALIZED!>A<!> {
     <!CONFLICTING_OVERLOADS!>override fun rest(s: String)<!> {}
 
     <!CONFLICTING_OVERLOADS!>fun rest(s: String)<!> {}

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

@@ -2,7 +2,7 @@ class A {
     fun f() {}
 }
 
-class B : A {
+class B : <!SUPERTYPE_NOT_INITIALIZED!>A<!> {
     fun g() {
         <!NOT_A_SUPERTYPE!>super<String><!>.<!UNRESOLVED_REFERENCE!>f<!>()
         super<A>.f()

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

@@ -2,7 +2,7 @@ open class A {
     open var test: Number = 10
 }
 
-open class B : A {
+open class B : <!SUPERTYPE_NOT_INITIALIZED!>A<!> {
     override var test: <!VAR_TYPE_MISMATCH_ON_OVERRIDE!>Double<!> = 20.0
 }
 

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

@@ -2,7 +2,7 @@ open class A {
     open fun test(): Number = 10
 }
 
-open class B : A {
+open class B : <!SUPERTYPE_NOT_INITIALIZED!>A<!> {
     override fun test(): Double = 20.0
     fun test(x: Int) = x
 }

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

@@ -1,8 +1,8 @@
 class A
-class B : A
+class B : <!SUPERTYPE_NOT_INITIALIZED!>A<!>
 
 class C(x: Int)
-<!INAPPLICABLE_CANDIDATE!>class D : C<!>
+<!INAPPLICABLE_CANDIDATE!>class D : <!SUPERTYPE_NOT_INITIALIZED!>C<!><!>
 class E : C(10)
 class F() : C(10)