Bug 993273 - Ensure FxA dialog is created hidden
Revert "Merge pull request #18445 from chuck-lee/bug-997791_Gaia_ui_test_error_on_wifi_enable_disable"

This reverts commit 0a299a0f0ef33ed1dce7eb50ab900855b4d8369a.
Merge pull request #18528 from jaoo/998914

Bug 998914 - [Settings] Cannot preselect the APN correctly if there are several APNs with the same carrier name (follow-up bug 991628). r=arthurcc
Merge pull request #18660 from timdream/fix-trust-ui-fxa-1.4

Bug 993273 - Ensure FxA dialog is created hidden +shepherd
Bug 995605 - [Sora][Message][MMS]Can't add the text in content when forward a media MMS r=schung

The issue is that in compose.js, "pointer-events: none" is added after it's
removed, in this case.

This patch ensures that SMIL.parse always calls the callback in an asynchronous way,
so that the caller does not have any surprise.