Save & recalculate declare flag modifier on late printed statements (#29412)

* Save & recalculate declre flag modifier on late printed statements

* Accept related baseline updates

tests/cases/compiler/declarationEmitLocalClassHasRequiredDeclare.ts

@@ -0,0 +1,16 @@
+// @declaration: true
+export declare namespace A {
+    namespace X { }
+}
+
+class X { }
+
+export class A {
+    static X = X;
+}
+
+export declare namespace Y {
+
+}
+
+export class Y { }