[FxA] The synced icon wrongly exceeds the shots area if the height of the saved shot is small

[SoftVision-CosminMuntean]

[Affected versions]:

• Nightly 64.0a1
• Screenshots 34.0.0 dev

[Affected Platforms]:

• All Windows
• All Linux

[Prerequisites]:

• The "xpinstall.signatures.required" boolean pref is set to "false".
• The "extensions.legacy.enabled" boolean pref is set tot "true".
• Have the Screenshots 34.0.0 dev version installed from here, on a new clean profile.

[Prerequisites]:

• You are logged into FxA.
• Have multiple saved shots synced that have a small height.

[Steps to reproduce]:

1. Open the Firefox browser with the profile from prerequisites.
2. Navigate to "My Shots" page.
3. Observe the Synced icon displayed on the synced shots.

[Expected result]:

• The synced icon is correctly displayed on each shot.

[Actual results]:

• The synced icon exceeds the shots area if the image has a small height.

[Notes]:

• Here is a screenshot of the issue:
  

[SoftVision-CosminMuntean]

I have verified this issue using latest Screenshots 34.0.0 de version and the issue is no longer reproducible. Tested on Windows 7 x64, Mac 10.13 and Arch Linux 4.12.