fix: Properly roll back initialConnections

[FrederikBolding]

Our current rollback approach did not account for initialConnections, which are handled separately from other permissions because they are somewhat complicated to apply. If a Snap failed to update, we would not correctly roll back the changes to the initialConnections. This PR fixes that issue.

Fixes #3619

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.28%. Comparing base (a932d61) to head (ce4e5ff).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3618   +/-   ##
=======================================
  Coverage   98.28%   98.28%           
=======================================
  Files         417      417           
  Lines       11772    11777    +5     
  Branches     1832     1834    +2     
=======================================
+ Hits        11570    11575    +5     
  Misses        202      202           

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[cryptodev-2s]

LGTM!