Show all category history even if category renamed

[dracos]

Fixes #3181.

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (master@7135fb0). Click here to learn what that means.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master    #3208   +/-   ##
=========================================
  Coverage          ?   83.79%           
=========================================
  Files             ?      249           
  Lines             ?    15795           
  Branches          ?     2969           
=========================================
  Hits              ?    13236           
  Misses            ?     1621           
  Partials          ?      938           

Impacted Files	Coverage Δ
perllib/FixMyStreet/App/Controller/Admin/Bodies.pm	96.15% <ø> (ø)

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[davea]

🔀 ⏳ 🆗