Add missed mirror-mode message overrides (#2108)

PR #1704 hand-curated mirrorMsgOverrides from in-game observation, which left
gaps. Auditing the GC BMG data (res/Msgus, GZ2E01) for every message carrying a
Wii redirect turned up 13 more that belong in the table:

- Two Kakariko signposts (0x1f41, 0x1f42) whose arrow/name layout is mirrored on
  Wii but were never added.
- Five dialogue/journal lines whose direction words flip GC vs Wii, including
  Midna's "Eldin Province to the east/west" line reported in the PR thread.
- Six shop browse-arrow lines in the same class as entries the original pass
  already included.

Each added id appears with a Wii redirect in exactly one BMG group, so the
id-only lookup resolves unambiguously. 0x1b79 was deliberately left out: it
maps to different Wii variants in zel_01 (shop) and zel_07 (fishing controls),
which this table can't disambiguate without becoming group-aware.

src/d/d_msg_object.cpp

@@ -644,8 +644,21 @@ static const MirrorMsgOverride mirrorMsgOverrides[] = {
     {0x17e2, 0x3ef2},
     {0x1dae, 0x44be},
     {0x14ca, 0x3bda},
-    {0x470, 0x493}, 
+    {0x470, 0x493},
     {0x473, 0x492},
+    {0x1f41, 0x4651},
+    {0x1f42, 0x4652},
+    {0x0847, 0x0870},
+    {0x0d5c, 0x0d65},
+    {0x0a97, 0x0a98},
+    {0x0327, 0x12ba},
+    {0x0328, 0x12bb},
+    {0x1534, 0x3c44},
+    {0x1536, 0x3c46},
+    {0x1557, 0x3c67},
+    {0x1b88, 0x4298},
+    {0x14c8, 0x3bd8},
+    {0x151b, 0x3c2b},
 };
 
 static u32 getMirrorMsgOverride(u32 msgId) {