Fix running executor with legacy api disabled

[JamesMurkin]

This PR just makes it so UseLegacyApi is set to false, no components used with the legacy api are used

┆Issue is synchronized with this Jira Task by Unito

[codecov]

Codecov Report

Patch coverage has no change and project coverage change: -0.34 ⚠️

Comparison is base (85fdace) 59.30% compared to head (c204879) 58.97%.

❗ Current head c204879 differs from pull request most recent head 88ad297. Consider uploading reports for the commit 88ad297 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2369      +/-   ##
==========================================
- Coverage   59.30%   58.97%   -0.34%     
==========================================
  Files         226      225       -1     
  Lines       28834    28472     -362     
==========================================
- Hits        17101    16790     -311     
+ Misses      10423    10390      -33     
+ Partials     1310     1292      -18     

Flag	Coverage Δ
armada-server	58.97% <0.00%> (-0.34%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
internal/executor/application.go	7.52% <0.00%> (-0.06%)	⬇️

... and 15 files with indirect coverage changes

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