Update sysbta status based on property

Don't update the property on boot, it's a persist anyway

Test: On Pixel 6a, put the apk in system.img, do factory reset, check system-wide bt
is properly enabled. Go in treble settings, reboot. Check again

app/src/main/java/me/phh/treble/app/Misc.kt

@@ -277,10 +277,10 @@ object Misc: EntryStartup {
         spListener.onSharedPreferenceChanged(sp, MiscSettings.forceCamera2APIHAL3)
         if (! sp.contains(MiscSettings.headsetFix))
             sp.edit().putBoolean(MiscSettings.headsetFix, HuaweiSettings.enabled()).commit()
+        sp.edit().putBoolean(MiscSettings.sysbta, SystemProperties.getBoolean("persist.bluetooth.system_audio_hal.enabled", false)).apply()
         spListener.onSharedPreferenceChanged(sp, MiscSettings.headsetFix)
         spListener.onSharedPreferenceChanged(sp, MiscSettings.bluetooth)
         spListener.onSharedPreferenceChanged(sp, MiscSettings.displayFps)
-        spListener.onSharedPreferenceChanged(sp, MiscSettings.sysbta)
         spListener.onSharedPreferenceChanged(sp, MiscSettings.noHwcomposer)
         spListener.onSharedPreferenceChanged(sp, MiscSettings.storageFUSE)
         spListener.onSharedPreferenceChanged(sp, MiscSettings.dt2w)