Broken image displayed for the account avatar if the user deletes the Account picture

[GeorgiuCiprian]

[Affected versions]:

• Firefox 65.0.1

[Affected Platforms]:

• Windows 10 x64
• macOS 10.13
• Ubuntu 18.04 x64

[Steps to reproduce]:

1. Navigate to http://stage.firefoxmonitor.nonprod.cloudops.mozgcp.net and Sign in with a valid account.
2. Go to https://stable.dev.lcip.org/settings and change the default "Account picture" to any other one.
3. Click on the "Change" button from https://stable.dev.lcip.org/settings and clear the image set at the above step.
4. Refresh the http://stage.firefoxmonitor.nonprod.cloudops.mozgcp.net website.

[Expected result]:

• The "Account picture" is reverted to the default image.

[Actual result]:

• The "Account picture" is reverted to broken image.

[Regression]:

• N/A

[Additional notes]:

• Note that after the user signs out from the website then signs in again, the default image is properly displayed.

• please observe the screenshot with the issue below:
  

[groovecoder]

Hmm ... this would also require pinging FxA on every page-load, unless we can get a callback on all profile data updates?

[lesleyjanenorton]

I can no longer reproduce this - please reopen if this is still an issue. thanks!