test(web-console): handle available capacity warning in MSQ e2e

[gitedmond]

Fixes #20438.

Description

The multi-stage query e2e test can encounter the workbench capacity warning when another spec’s compaction task occupies a slot. The helper previously waited for results while the dialog remained open, timing out after four minutes.

Wait for either the result pane or the specific warning about temporarily unavailable slots. If the warning appears, confirm “Run it anyway” and then wait for the result pane. The warning about insufficient total cluster capacity is intentionally left to fail, since that query cannot run.

Validation

• npm run typecheck (after generating SQL docs): passed
• ESLint and Prettier check for the changed file: passed
• Full e2e run requires a Druid test cluster and has not been run locally.

This PR has:

• been self-reviewed.

[FrankChen021]

🟢 Approval recommended

No actionable issues found. The helper recognizes the temporary available-slot warning, confirms the dialog to submit the query, and then waits for results; it leaves the insufficient-total-capacity warning unhandled as intended. The existing fresh browser context and browser teardown support the result-versus-dialog wait in this test.

Reviewed 1 of 1 changed files and inspected 7 supporting source/configuration files (8 files total), covering the calling e2e test, browser and table helpers, dialog implementation, query submission/rendering flow, and package configuration. Static review only; no tests or builds were run.

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This is an automated review by Codex GPT-5.6-Luna(max)