TelecomAccountRegistry update* functions now have sync wrapper

Partner reporter that TelecomAccountRegistry was running code
on a Account for a removed SIM.  Hypothesis is the error was
due to code blocks not being encapsulated in a synch wrapper.

bug: 221013040
Test: none
Change-Id: I48bd96845a3e1ccf7c4ce3ad387a42775bdda86f
1 file changed