feat: updated notification preferences unsubscribe flow

[muhammadadeeltajamul]

Updated notification unsubscribe flow url

• patch is not required... removed hashed patch from url
• To make it backwards compatible, hashed patch can still be used but will not be sent to backend

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.83%. Comparing base (e6f7588) to head (a59db8a).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1778   +/-   ##
=======================================
  Coverage   90.83%   90.83%           
=======================================
  Files         344      344           
  Lines        5792     5792           
  Branches     1372     1331   -41     
=======================================
  Hits         5261     5261           
- Misses        512      514    +2     
+ Partials       19       17    -2     

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