docs(svelte): replace deprecated isLoading with isPending in overview

[poetryofcode]

Summary

The Svelte overview example used query.isLoading which is a deprecated alias in TanStack Query v5. The correct property is query.isPending.

• All other framework overviews (React, Vue, Solid, Angular) already use isPending
• isLoading was deprecated in v5 and is now just an alias for isPending && isFetching

Changes

• docs/framework/svelte/overview.md: Changed {#if query.isLoading} → {#if query.isPending}

Test plan

• Verify isPending matches the API reference docs
• Check other framework overview files use the same pattern

Summary by CodeRabbit

• Documentation
  • Updated the Svelte example to use the current loading-state check in the conditional rendering example.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: f6e687a0-5732-4c4a-adf8-33dc58e1c8be

📥 Commits

Reviewing files that changed from the base of the PR and between d6798b5 and 29b14b8.

📒 Files selected for processing (1)

• docs/framework/svelte/overview.md

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📝 Walkthrough

Walkthrough

A single-line change in the Svelte overview documentation updates the example's conditional rendering check from query.isLoading to query.isPending.

Changes

Svelte Docs Fix

Layer / File(s)	Summary
Fix loading state check in example docs/framework/svelte/overview.md	Replaces query.isLoading with query.isPending in the conditional rendering example.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~1 minute

Possibly related PRs

• TanStack/query#10990: Makes the identical isLoading → isPending change in the same Svelte overview doc file.
• TanStack/query#10991: Also updates docs/framework/svelte/overview.md with the same isLoading → isPending fix.

Poem

A rabbit hopped through docs one day,
Found isLoading in the way.
With a twitch of a paw and a knowing glance,
Swapped isPending — now it has a chance! 🐇✨

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	The description covers the change, but it does not follow the required template sections and omits the checklist and release impact entries.	Add the required template headings: Changes, Checklist, and Release Impact, and explicitly mark the docs-only release impact.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title is concise, specific, and accurately describes the Svelte docs change.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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