Merge pull request #20433 from gmarty/bug-1014918-FTU-No-operator-shown-when-SIM-has-PIN

Bug 1014918 - [FTU][Sim Manager][Flame] 'No operator' is shown when a SIM has PIN
Merge pull request #20511 from guilherme-pg/bug1017832-play-sound-doesnt-play

Bug 1017832 - Properly use 'content' channel for playing sound on Find My Device. r=dflanagan
Merge pull request #20576 from etiennesegonzac/bug-1017416-forward-touch-to-activities

Bug 1017416 - Make sure the ringtones app is included in the stack r=alive
Merge pull request #20538 from mcjimenez/bug1014517

Bug 1014517 - Execute the single variant customization the first time a configured SIM is inserted (r = kgrandon)