fix: nunjucks mode not break completions

[blaggacao]

Issue #, if available:

Description of changes:

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Pull Request Checklist:

• GUESS: No backwards incompatible changes were made to Ace's public interface which is defined through the main typings file (ace.d.ts) and its references:
  • https://github.com/ajaxorg/ace/blob/master/ace.d.ts
  • https://github.com/ajaxorg/ace/blob/master/ace-modes.d.ts
  • https://github.com/ajaxorg/ace/blob/master/ace-extensions.d.ts

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86.97%. Comparing base (be9e7d4) to head (0ed7fae).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #5638   +/-   ##
=======================================
  Coverage   86.97%   86.97%           
=======================================
  Files         594      594           
  Lines       43395    43396    +1     
  Branches     7170     7170           
=======================================
+ Hits        37742    37743    +1     
  Misses       5653     5653           

Flag	Coverage Δ
unittests	86.97% <100.00%> (+<0.01%)	⬆️

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[blaggacao]

This isn't going to work as is, and I need jinja anyways, so I concentrate on #5639