Make change and version bump to BP1A.241209.001
Snap for 12766088 from 5f64e580fb44e7986665da7d7eeac349d692514c to 25Q1-release

Change-Id: I0d1074c6a7c9548b7d97b1331d40f925b88af624
diff --git a/core/build_id.mk b/core/build_id.mk
index bed839f..9693b41 100644
--- a/core/build_id.mk
+++ b/core/build_id.mk
@@ -18,4 +18,4 @@
 # (like "CRB01").  It must be a single word, and is
 # capitalized by convention.
 
-BUILD_ID=MAIN
+BUILD_ID=BP1A.241209.001