🐛 Fix onChange handlers

[ibolton336]

• Addresses a small regression that showed up as a part of the pf5 migration/upgrade.

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (9887ead) 44.08% compared to head (505becb) 44.08%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1230   +/-   ##
=======================================
  Coverage   44.08%   44.08%           
=======================================
  Files         177      177           
  Lines        4512     4512           
  Branches     1005     1005           
=======================================
  Hits         1989     1989           
  Misses       2512     2512           
  Partials       11       11           

Flag	Coverage Δ
client	44.08% <0.00%> (ø)
server	∅ <ø> (∅)

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Files Changed	Coverage Δ
client/src/app/pages/proxies/proxy-form.tsx	34.45% <0.00%> (ø)

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[sjd78]

See #1136