Add flag not to enter ECBM in GSM and UMTS networks

Flag: com.android.internal.telephony.flags.disable_ecbm_based_on_rat
Bug: 389010789
Bug: 393978542
Test: VZW LTE E911 2.39
Test: Manual test - SRVCC(b/394203051)
Change-Id: Ie8f135235838fc33f9b124ae974c069d7d0b0694
diff --git a/flags/domainselection.aconfig b/flags/domainselection.aconfig
index d7c41b1..df15f35 100644
--- a/flags/domainselection.aconfig
+++ b/flags/domainselection.aconfig
@@ -49,3 +49,14 @@
     description: "This flag controls the addition of EMERGENCY_REDIAL_ON_IMS and EMERGENCY_REDIAL_ON_VOWIFI redial codes for normal routed emergency calls."
     bug:"357980439"
 }
+
+# OWNER=jaesikkong TARGET=25Q2
+flag {
+    name: "disable_ecbm_based_on_rat"
+    namespace: "telephony"
+    description: "Fix bug entering the emergency callback mode in GSM or UMTS network."
+    bug:"389010789"
+    metadata {
+        purpose: PURPOSE_BUGFIX
+    }
+}