fix(ResizeableDataTable): rework loading state

[artemmufazalov]

Part of #2892

Stand: https://nda.ya.ru/t/tNojZU0Y7MWKUx
You could see changes if you turn on 3G in browser network and change sorting in top queries table

Before - no data instead of loader on sort column change in TopQueries:

After - proper loading state on sort column change in TopQueries:

CI Results

Test Status: ❌ FAILED

📊 Full Report

Total	Passed	Failed	Flaky	Skipped
378	373	2	1	2

Test Changes Summary ⏭️2

⏭️ Skipped Tests (2)

1. Scroll to row, get shareable link, navigate to URL and verify row is scrolled into view (tenant/diagnostics/tabs/queries.test.ts)
2. Copy result button copies to clipboard (tenant/queryEditor/queryEditor.test.ts)

Bundle Size: 🔺

Current: 47.22 MB | Main: 47.15 MB
Diff: +0.07 MB (0.14%)

⚠️ Bundle size increased. Please review.

ℹ️ CI Information

• Test recordings for failed tests are available in the full report.
• Bundle size is measured for the entire 'dist' directory.
• 📊 indicates links to detailed reports.
• 🔺 indicates increase, 🔽 decrease, and ✅ no change in bundle size.

[Copilot]

Pull Request Overview

This PR refactors the ResizeableDataTable component to support distinct loading states with clearer semantics. The component now distinguishes between initial loading (isLoading) and data fetching (isFetching), following patterns commonly used in RTK Query.

Key changes:

• Renamed the loading prop to isLoading and isFetching to distinguish between initial load and subsequent data fetches
• Added isLoading support to show TableSkeleton when table structure/columns aren't ready
• Added isFetching support to show inline skeleton rows while preserving table headers during data fetches
• Wrapped computed values in useMemo hooks for better performance

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 2 comments.

File	Description
src/components/ResizeableDataTable/ResizeableDataTable.tsx	Refactored to support isLoading and isFetching states with memoized columns, data, and settings; added TableSkeleton for initial loading
src/containers/Tenant/Diagnostics/TopQueries/QueriesTableWithDrawer.tsx	Updated to use isFetching prop instead of deprecated loading prop
src/containers/Tenant/Diagnostics/Partitions/Partitions.tsx	Removed manual loading check and TableSkeleton rendering; updated to use isLoading prop
src/containers/Node/Threads/Threads.tsx	Updated to use isLoading prop instead of deprecated loading prop

Comments suppressed due to low confidence (1)

src/containers/Tenant/Diagnostics/Partitions/Partitions.tsx:134

• The condition {partitionsData ? renderContent() : null} prevents the table from rendering during initial load when isLoading is true. This means the TableSkeleton in ResizeableDataTable will never be shown. The logic should render content when either partitionsData exists OR when loading is true to show the skeleton state properly.

                {partitionsData ? renderContent() : null}

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