When adding bluetooth phone account as emergency capable, also list it for multi user

Test: local test. adb shell setprop ril.ecclist 911,122,*911,#911,411.
And then manual test that the bluetooth phone account is chosen for 411 ecall.

Bug: 134179750

Merged-In: Ibe297d30f713534e0977aac5a95543053aac9f9d
Change-Id: Ibe297d30f713534e0977aac5a95543053aac9f9d