[Snapshot] fix #7941 for faulty snapshot 3-dot menu sizing

[johnriedel]

Closes #7941

Describe your changes:

Modified CSS to prevent snapshot 3-dot menu from collapsing horizontally making the menu options unreadable.

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Author Checklist

• Changes address original issue?
• Tests included and/or updated with changes?
• Has this been smoke tested?
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• Testing instructions included in associated issue OR is this a dependency/testcase change?

Reviewer Checklist

• Changes appear to address issue?
• Reviewer has tested changes by following the provided instructions?
• Changes appear not to be breaking changes?
• Appropriate automated tests included?
• Code style and in-line documentation are appropriate?

Testing Instructions

1. Take a snapshot and save it to snapshots, not a notebook
2. Expand the snapshot drawer from the snapshots icon in the notifications area
3. Click the three dot menu in a snapshot
4. The Title items on the left side of menu should not be cut off by the 3-dot menu width.
5. Shrink the viewport (browser screen) vertically; the 3-dot menu will not shrink horizontally and cut-off the tile item text.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 57.26%. Comparing base (5be103e) to head (4ecbe44).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #7988      +/-   ##
==========================================
- Coverage   57.70%   57.26%   -0.44%     
==========================================
  Files         678      678              
  Lines       27428    27428              
  Branches     2691     2691              
==========================================
- Hits        15826    15708     -118     
- Misses      11264    11378     +114     
- Partials      338      342       +4     

Flag	Coverage Δ
e2e-ci	62.82% <ø> (ø)
e2e-full	23.65% <ø> (-18.36%)	⬇️
unit	49.30% <ø> (-0.22%)	⬇️

see 16 files with indirect coverage changes

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