[8.4](backport #33236) [filebeat] Fix ingest pipeline overwriting module field values

[mergify[bot]]

This is an automatic backport of pull request #33236 done by Mergify.

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• Start Time: 2022-10-05T08:32:02.466+0000

• Duration: 70 min 3 sec

Test stats :test_tube:

Test	Results
Failed	0
Passed	6330
Skipped	737
Total	7067

:green_heart: Flaky test report

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[mergify[bot]]

This pull request has not been merged yet. Could you please review and merge it @crespocarlos? 🙏