feat: notify self-hosted users that execution/site logs are unavailable

[ChiragAgg5k]

What

Self-hosted open-source Appwrite no longer stores function/site execution log and error output. This adds an informational notice in the console so users understand why the Logs and Errors sections may appear empty, instead of just seeing "No logs found."

How

• New component src/lib/components/logs/selfHostedLogsAlert.svelte — a product-aware (site | function) Alert.Inline status="info", mirroring the existing loggingAlert.svelte pattern.
• Updated src/lib/components/logs/logsResponse.svelte — the shared component that renders the Logs/Errors tabs for both functions and sites. Imports isSelfHosted from $lib/system and renders the new alert in the Logs and Errors branches when on self-hosted and no output is present (taking precedence over the old LoggingAlert / "No logs found." fallbacks).

Because the Logs/Errors rendering is shared, this single change covers both function executions (functions/.../executions/sheet.svelte) and site logs (sites/.../logs/sheet.svelte).

Behavior

• Shown only on self-hosted builds (isCloud users are unaffected).
• Always shown on self-hosted when there's no log/error output, regardless of the logging toggle, since logs are never persisted there.
• Copy is state-neutral ("...so this section may be empty") so it reads correctly for older executions that legitimately had empty logs, without implying their data was deleted.

Copy

Function:

Execution logs are unavailable on self-hosted Appwrite
To reduce storage overhead, self-hosted Appwrite no longer stores function logs or error output. As a result, this section may be empty. You can still view execution status, duration, and response code. Full execution logs remain available on Appwrite Cloud.

Site:

Logs are unavailable on self-hosted Appwrite
To reduce storage overhead, self-hosted Appwrite no longer stores logs or error output. As a result, this section may be empty. You can still view log status, duration, and response code. Full logs remain available on Appwrite Cloud.

Testing

• bun run format — clean
• bun run lint (eslint on touched files) — clean
• bun run check — no new errors from touched files (pre-existing @appwrite.io/console module-resolution errors are environment-only, SDK not installed locally)