patches: fix childFrameLastBuffer ivar init order

The Qnil initialization was in patch 0000 (Zoom) but the ivar
declaration is in patch 0008 (child frame tracking).  Moved the
init to patch 0008 so each patch compiles independently.

patches/0004-ns-add-interactive-span-elements-for-Tab-navigation.patch

@@ -1,4 +1,4 @@
-From 014826c0b4de37f5e6adbd85032282dabae623a3 Mon Sep 17 00:00:00 2001
+From deb9e1e6d759b387246a71061194716505920684 Mon Sep 17 00:00:00 2001
 From: Martin Sukany <martin@sukany.cz>
 Date: Sat, 28 Feb 2026 12:58:11 +0100
 Subject: [PATCH 5/9] ns: add interactive span elements for Tab navigation
@@ -17,7 +17,7 @@ Tested on macOS 14.  Verified: Tab-cycling through org-mode links,
  1 file changed, 286 insertions(+)
 
 diff --git a/src/nsterm.m b/src/nsterm.m
-index b48f0c2..01751ce 100644
+index e818817..d2a5a58 100644
 --- a/src/nsterm.m
 +++ b/src/nsterm.m
 @@ -9265,6 +9265,292 @@ - (NSRect)accessibilityFrame