Use shared flags of the type

The ELTS_SHARED flag is generic, so we should prefer to use the flags
specific of the type (STR_SHARED for strings and RARRAY_SHARED_FLAG
for arrays).

ext/objspace/objspace_dump.c

@@ -14,6 +14,7 @@
 
 #include "gc.h"
 #include "internal.h"
+#include "internal/array.h"
 #include "internal/hash.h"
 #include "internal/string.h"
 #include "internal/sanitizers.h"
@@ -456,7 +457,7 @@ dump_object(VALUE obj, struct dump_config *dc)
       case T_ARRAY:
         dump_append(dc, ", \"length\":");
         dump_append_ld(dc, RARRAY_LEN(obj));
-        if (RARRAY_LEN(obj) > 0 && FL_TEST(obj, ELTS_SHARED))
+        if (RARRAY_LEN(obj) > 0 && FL_TEST(obj, RARRAY_SHARED_FLAG))
             dump_append(dc, ", \"shared\":true");
         if (FL_TEST(obj, RARRAY_EMBED_FLAG))
             dump_append(dc, ", \"embedded\":true");

internal/string.h

@@ -106,7 +106,7 @@ STR_EMBED_P(VALUE str)
 static inline bool
 STR_SHARED_P(VALUE str)
 {
-    return FL_ALL_RAW(str, STR_NOEMBED | ELTS_SHARED);
+    return FL_ALL_RAW(str, STR_NOEMBED | STR_SHARED);
 }
 
 static inline bool