add new alt system/vendor mismatch error fix

patches/Build.java-alt-4.patch

@@ -0,0 +1,21 @@
+--- old/Build.java	2026-07-28 15:27:24.193140783 -0500
++++ new/Build.java	2026-07-28 16:12:26.635606082 -0500
+@@ -1729,18 +1729,8 @@
+      * @hide
+      */
+     public static boolean isBuildConsistent() {
+-        // Don't care on eng builds.  Incremental build may trigger false negative.
+-        if (IS_ENG) return true;
+-
+-        int result = VintfObject.verifyBuildAtBoot();
+-        if (result != 0) {
+-            Slog.e(TAG, "Vendor interface is incompatible, error=" + result);
+-           return false;
+-        }
+-
+         return true;
+     }
+-
+     /** Build information for a particular device partition. */
+     public static class Partition {
+         /** The name identifying the system partition. */