fix: correct 025108a8 — drop the accidentally-committed owner probe hunk

025108a8's own git-add -p staging for src/AcDream.App/UI/UiRoot.cs was
correct (only the ClipsChildren override + WantsMouse hunks staged,
verified via git diff --cached before committing), but the trailing
`git commit -m ... -- <pathspec>` listed UiRoot.cs by path — and a
pathspec-scoped `git commit` re-reads THOSE paths from the WORKING
TREE rather than honoring the index, silently pulling in the
pre-existing uncommitted ACDREAM_PROBE_UI_HOVER hunk alongside the
two intended ones.

This commit removes exactly that 17-line probe hunk from HEAD via a
direct index/blob edit (git hash-object + update-index), touching
ONLY the git object database — the working tree file is untouched
and still carries the probe as an uncommitted change, exactly as it
was before the CT-GF1 fix round started. Diffed the corrected blob
against HEAD to confirm the removal is byte-for-byte just the probe
block, nothing else.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/AcDream.App/UI/UiRoot.cs

@@ -1418,23 +1418,6 @@ public sealed class UiRoot : UiElement
                 Data1: (int)(x - screen.X),
                 Data2: (int)(y - screen.Y));
             w.OnEvent(in enter);
-            if (UiDiagnostics.ProbeHover)
-            {
-                string detail = w is UiScrollbar sb
-                    ? $" start=0x{sb.ActiveStartSpriteForTest:X8}"
-                      + $" end=0x{sb.ActiveEndSpriteForTest:X8}"
-                      + $" thumb=0x{sb.ActiveThumbSpriteForTest:X8}"
-                      + $" disabled={sb.IsModelDisabled}"
-                    : "";
-                Console.WriteLine(
-                    $"[ui-hover] widget={w.GetType().Name}"
-                    + $" dat=0x{w.DatElementId:X8}"
-                    + $" local=({(int)(x - screen.X)},{(int)(y - screen.Y)}){detail}");
-            }
-        }
-        else if (UiDiagnostics.ProbeHover)
-        {
-            Console.WriteLine("[ui-hover] widget=<none>");
         }
     }