patches: pre-upstream review fixes (all blockers + nits)

- 0000: fix double blank line before #ifdef, remove extra block scope braces
- 0001: spell out 'AT' -> 'assistive technology'; fix stub comment
- 0002: revert unrelated em-dash->triple-dash in windowWillResize strings
- 0003-0005: renumber from [PATCH N/9] to [PATCH N/8]
- 0006: remove 'Block-style cursors' from Known Limitations; fix @xref note
- 0007: remove spurious ns_ax_face_is_selected ChangeLog entry
- 0008: refactor goto skip_overlay_scan to nested if; remove spurious blank line
- All: renumber series (0000=[PATCH 1/1], 0001-0008=[PATCH 1/8]-[PATCH 8/8])

patches/0001-ns-add-accessibility-base-classes-and-helpers.patch

@@ -1,7 +1,7 @@
 From 573beced02b3f9b70ba82694d8e4790cfeee9563 Mon Sep 17 00:00:00 2001
 From: Martin Sukany <martin@sukany.cz>
 Date: Wed, 4 Mar 2026 15:23:53 +0100
-Subject: [PATCH 2/9] ns: add accessibility base classes and helpers
+Subject: [PATCH 1/8] ns: add accessibility base classes and helpers
 
 Add the foundation for macOS VoiceOver accessibility in the NS (Cocoa)
 port.  No existing code paths are modified.
@@ -26,7 +26,7 @@ rect via glyph matrix.
 (EmacsAccessibilityElement): Implement base class.
 (syms_of_nsterm): Register accessibility DEFSYMs.  Add DEFVAR_BOOL
 ns-accessibility-enabled with corrected doc: initial value is nil,
-set non-nil automatically when an AT is detected at startup.
+set non-nil automatically when an assistive technology (AT) is detected at startup.
 ---
  src/nsterm.h | 131 +++++++++++++++
  src/nsterm.m | 466 +++++++++++++++++++++++++++++++++++++++++++++++++++
@@ -633,7 +633,7 @@ index 6333a7253a..9c53001e37 100644
 +
 +- (void)invalidateInteractiveSpans
 +{
-+  /* Stub: full implementation added in patch 0004.  */
++  /* Stub: full implementation in the following patch.  */
 +}
 +
 +@end