(20.12 LTS backport) fix request.args.pop removing parameters inconsistently

[artcg]

No description provided.

[codecov]

Codecov Report

Merging #2112 (a4d1448) into 20.12LTS (35c7625) will not change coverage.
The diff coverage is 100.000%.

@@            Coverage Diff             @@
##           20.12LTS     #2112   +/-   ##
==========================================
  Coverage    92.778%   92.778%           
==========================================
  Files            29        29           
  Lines          3268      3268           
  Branches        573       573           
==========================================
  Hits           3032      3032           
  Misses          159       159           
  Partials         77        77           

Impacted Files	Coverage Δ
sanic/request.py	99.237% <100.000%> (ø)

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[ahopkins]

See #2106 and #2110

[ashleysommer]

Looks good.
Are there any other recent fixes from 21.3 or master that we should push back into 20.12 to make a new LTS release?

[ahopkins]

None. Since this has been out there for at least 2 years, my thought was to roll LTS updates with the next release.

[ashleysommer]

Submitter confirmed that #2113 affects 20.12 too, so when a fix for that comes we should roll that into LTS too.