RDKEMW-10481 : "btMgrBus" Crash in BtrCore_BTGetPairedDeviceInfo

Reason for change: Add defensive NULL check for interface handle in DBus message creation
Priority: P1

Test Procedure: Follow the steps provided in description.
Risks:Low

Author: tharun-kumarv

conf/include/generic-srcrev.inc

@@ -14,7 +14,7 @@ SRCREV:pn-iarmmgrs = "e7c386e3e9027c39fdc071c4bf07dbb32026237c"
 SRCREV:pn-rdk-gstreamer-utils = "ea9c7ec1a810053619596123f5bd6fd22b3215f4"
 SRCREV_devicesettings = "88e7776fb5ad2b2dabf4346457b6941545ba683c"
 SRCREV:pn-bluetooth-mgr = "b284d24692988285e449252829eacc78214634b5"
-SRCREV:pn-bluetooth-core = "7a179b790530becb8e620057e7d57922ddafff21"
+SRCREV:pn-bluetooth-core = "1ee6108a1d1943794df5a38d22b6503a58e8f945"
 SRCREV_rdkversion = "d461bbd2fc8299f6e5056f488ff944e90142e9b6"
 SRCREV:pn-telemetry = "39eb3d4b84a090581d908896d05cbfa56b1ca492"
 SRCREV:pn-dcmd = "03974134e21b316d4053de6574df14b3a423c8d6"