[7.11] [Fleet]: ignore 404, check if there are transforms in results. (#80721)

[pzl]

Backport of #80721 into 7.11

This is a moderately old PR, that was backported to 7.10 in the day, but was not backported to 7.x, so when 7.11 was created, it also lacked this.

This is an important fix for two reported 7.11 bugs: #88630 and #88249

[skh]

What about those lines from the original PR, did they make it into 7.x some other way?

https://github.com/elastic/kibana/pull/80721/files#diff-b40ad176fe9b892e2f866f7b83ce8630fd96a9fc55f75e3f6e701d01098e1726R51-R61

[pzl]

What about those lines from the original PR, did they make it into 7.x some other way?

Yes, it looks like the if + for there seemed to make it into 7.11 some other way

[kibanamachine]

💚 Build Succeeded

• continuous-integration/kibana-ci/pull-request
• Commit: 2c96c1c

Metrics [docs]

✅ unchanged

To update your PR or re-run it, just comment with:
@elasticmachine merge upstream

[skh]

You don't need codeowners' approval on backports, but here's one anyway.