functions view: Replace ANOTHER instance of Infinity in JSON

[bobemoe]

This is a continuation of https://github.com/graphite-project/graphite-web/pull/2612 as it seems the target JSON may have changed structure slightly since the original patch was tested, meaning it misses replacing an instance of Infinity that comes last (does not have a trailing comma). This patch targets the trailing close brace also.

This patch fixes https://github.com/grafana/grafana/issues/45948

[deniszh]

Hi @bobemoe ,

Looks good, let me run tests and I will merge it.

[codecov-commenter]

Codecov Report

Merging #2737 (64bee58) into master (2105089) will decrease coverage by 0.06%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #2737      +/-   ##
==========================================
- Coverage   76.29%   76.23%   -0.07%     
==========================================
  Files          88       88              
  Lines        9593     9593              
  Branches     2149     2149              
==========================================
- Hits         7319     7313       -6     
- Misses       2011     2014       +3     
- Partials      263      266       +3     

Impacted Files	Coverage Δ
webapp/graphite/functions/views.py	95.12% <100.00%> (ø)
webapp/graphite/tags/redis.py	87.03% <0.00%> (-3.71%)	:arrow_down:

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[deniszh]

💚 All backports created successfully

Status	Branch	Result
✅	1.1.x

Questions ?

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