SystemUI: fix msim signal cluster text label spacing

When WiFi is on and mobile data is active with msim device, the first
mobile text label (e.g. 1) was too close to the WiFi icon. Show the
spacer as necessary.

Change-Id: I2fc4c77f448647d79d81cfa02373da477556c6b0
Signed-off-by: Roman Birg <roman@cyngn.com>
SystemUI: hide msim no-sim icons

Simply hide the SIM mobile indicator group when a no SIM icon is
requested.

Change-Id: I074b8e486ab35f57daa1f1eaee7e5b696835b3b8
Signed-off-by: Roman Birg <roman@cyngn.com>