Prohibit val/vars/modifiers on secondary constructor parameter

#KT-6962 Fixed

compiler/testData/diagnostics/tests/secondaryConstructors/valOrValAndModifiersInCtr.kt

@@ -0,0 +1,7 @@
+// !DIAGNOSTICS: -UNUSED_PARAMETER
+class A {
+    constructor(
+        <!VAL_OR_VAR_ON_SECONDARY_CONSTRUCTOR_PARAMETER!>val<!> x: Int, y: Int,
+        <!VAL_OR_VAR_ON_SECONDARY_CONSTRUCTOR_PARAMETER!>var<!> z: Int,
+        <!ILLEGAL_MODIFIER!>public<!> a: Int) {}
+}

compiler/testData/diagnostics/tests/secondaryConstructors/valOrValAndModifiersInCtr.txt

@@ -0,0 +1,8 @@
+package
+
+internal final class A {
+    public constructor A(/*0*/ x: kotlin.Int, /*1*/ y: kotlin.Int, /*2*/ z: kotlin.Int, /*3*/ a: kotlin.Int)
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}