Default to compiled version of files in CI

[labbati]

Description

By default DD_AUTOLOAD_NO_COMPILE must be false (or not set) so in CI we are sure that we always test the compiled version, that is what we ship to users.

In development, we can constantly avoid recompilation by doing make >>>dev<<< test_*** which sets DD_AUTOLOAD_NO_COMPILE=true while running the tests locally, without having to regenerate PHP files bundles.

Readiness checklist

• [ ] (only for Members) Changelog has been added to the release document.
• [ ] Tests added for this feature/bug.

Reviewer checklist

• Appropriate labels assigned.
• Milestone is set.
• Changelog has been added to the release document. For community contributors the reviewer is in charge of this task.

[codecov-commenter]

Codecov Report

Merging #1413 (5d00e44) into master (b61f79f) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1413   +/-   ##
=======================================
  Coverage   78.16%   78.16%           
=======================================
  Files         170      170           
  Lines       15389    15389           
=======================================
  Hits        12029    12029           
  Misses       3360     3360           

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