[Telink] Allow to erase entire NVS on factory reset by default; Fix IDM-7.1 test. (#23676)

diff --git a/config/telink/chip-module/Kconfig b/config/telink/chip-module/Kconfig
index 366c43d..f216280 100644
--- a/config/telink/chip-module/Kconfig
+++ b/config/telink/chip-module/Kconfig
@@ -266,3 +266,8 @@
 	  for sending it via OTA Software Update purposes.
 
 endif
+
+# See config/zephyr/Kconfig for full definition
+config CHIP_FACTORY_RESET_ERASE_NVS
+	bool
+	default y