Revert "fix: json getKeyValues (useful for autocomplete) (#1186)"

[teeohhem]

This reverts commit d60d920.

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Project	Deployment	Preview	Comments	Updated (UTC)
hyperdx-v2-oss-app	Building	Preview	Comment	Sep 20, 2025 2:08am

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E2E Test Results

✅ All tests passed • 16 passed • 3 skipped • 123s

Status	Count
✅ Passed	16
❌ Failed	0
⚠️ Flaky	0
⏭️ Skipped	3

View full report →

[MikeShi42]

Looks like we didn't check tableConnections length is my assumption, but that logic probably needs a bit more beefing up for other cases.

On further inspection there's a few other areas to improve upon as well, such as the lack of connectionId in the useJsonColumns query key (more of an edge case). (unrelated to original PR but just noticed as reviewing)