Improve error message in generic feed type without time field

[MosheEichler]

Status

• In Progress
• Ready
• In Hold - (Reason for hold)

Related Issues

fixes: link to the issue

Description

A few sentences describing the overall goals of the pull request's commits.

Must have

• Tests
• Documentation

[github-actions]

Coverage Report

File	Stmts	Miss	Cover	Missing
Packs/FeedElasticsearch/Integrations/FeedElasticsearch
FeedElasticsearch.py	398	123	69%	42–45, 47–50, 109, 133, 139–142, 144–145, 155–158, 188–195, 197–215, 217–219, 221–223, 225–226, 228, 232, 234–235, 237–238, 240, 299–300, 316, 322–329, 348, 354–358, 361–365, 377–378, 448–449, 451, 453–455, 458–459, 462–464, 470, 495–496, 499, 501–502, 504–505, 511–512, 514–516, 518–521, 576–578, 683, 708, 724, 726–728
TOTAL	398	123	69%

Tests	Skipped	Failures	Errors	Time
33	0 💤	0 ❌	0 🔥	3.586s ⏱️

[richardbluestone]

Docs review done

[content-bot]

Validate summary
The following errors were thrown as a part of this pr: RN106, ST111, RN111, PA114.
The following errors cannot be ignored: RN106, ST111, RN111, PA114.
If the AG100 validation in the pre-commit GitHub Action fails, the pull request cannot be force-merged.
The following errors don't run as part of the nightly flow and therefore can be force merged: RN106, ST111, RN111, PA114.

Verdict: PR can be force merged from validate perspective? ✅