yyqdbngt opened a new pull request, #3060:
URL: https://github.com/apache/rocketmq-dashboard/pull/3060
### Summary
Localize the **Metrics Explorer** component (`MetricsExplorer`) by replacing
its in-component bilingual `copy` dictionary (lang ternaries) with the shared
`metricsExplorer.*` translation keys (25 keys, zh/en), matching how the rest of
the localized UI resolves strings.
- Removed the `queryErrorFallback` ternary and the duplicated zh/en `copy`
literal (~60 lines) in favor of `t()`.
- `hiddenSeries` becomes a parameterized key (`{count}`, `{maxSeries}`)
rendered from `TrendPanel`'s `hiddenSeriesText` callback.
- Fixed the last hardcoded `aria-label="数据源"` on the data-source select; add
`t` to the query callbacks' dependency arrays.
### Why
The component was bilingual but duplicated copy logic and still leaked one
untranslated aria label; consolidating on `translations.ts` keeps a single
source of truth, lets `en` strings be tuned centrally, and removes the last
Chinese-only UI bit on the Prometheus explorer surface.
### Testing
- `tsc --noEmit` passes (exit 0).
- `eslint` clean on changed files (0 errors, 0 warnings).
- `MetricsExplorer` vitest suite passes (19/19), including data-source auth
dialogs and histogram paths.
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