Drop The Book of Unmaking's bar entry: 4619 is a chapter's objective slot

Field 136 named 4619 as that book's bar index. It is not a bar at all --
it is the objective slot of I: Cages, one of the book's own chapters --
so the bar never tracked and the chapter was wrongly excluded from bulk
writes to avoid a collision that did not exist.

34 of 38 books mapped. The Book of Unmaking's real bar index is
unmeasured; ship order places it at 2343 or 2345, the two free slots in
the Season of the Drifter run.

Sunrise/src/state/record_claims/parent_bar_table.h

@@ -25,7 +25,7 @@ struct Bar {
     std::uint16_t valueIndex;
 };
 
-inline constexpr std::array<Bar, 35> kBars{{
+inline constexpr std::array<Bar, 34> kBars{{
     {838U, 2398U},  // Confessions (measured)
     {815U, 1932U},  // The Lawless Frontier — parent record is named "The Tangled Shore" (measured)
     {816U, 1933U},  // The Man They Call Cayde (measured)
@@ -43,7 +43,6 @@ inline constexpr std::array<Bar, 35> kBars{{
     {831U, 1931U},  // The Forsaken Prince (measured)
     {832U, 1936U},  // Truth to Power (measured)
     {833U, 1938U},  // A Drifter's Gambit (measured)
-    {835U, 4619U},  // The Book of Unmaking (field136)
     {836U, 2347U},  // For Every Rose, a Thorn (measured)
     {837U, 2399U},  // The Chronicon (measured)
     {839U, 2514U},  // Unveiling (field136)