[FIR] Accept opt-in annotations on primary ctor params of properties

For backward compatibility with K1.

KT-56177

compiler/testData/diagnostics/testsWithStdLib/experimental/overrideInPrimaryConstructor.kt

@@ -0,0 +1,15 @@
+// SKIP_TXT
+// FIR_IDENTICAL
+
+@RequiresOptIn(level = RequiresOptIn.Level.ERROR)
+annotation class E
+
+abstract class Foo {
+    @E
+    abstract val bar: String
+}
+
+class SubFoo(
+    @OptIn(E::class)
+    override val bar: String,
+) : Foo()