fix(pagination): autoResetPageIndex should reset to 0, not initialState pageIndex

[sleitor]

Summary

Fixes #6207

When autoResetPageIndex fires (e.g. after data/filter changes), it now calls table.resetPageIndex(true) to reset to 0 (the default page) instead of table.resetPageIndex() which resets to initialState.pagination.pageIndex.

Root cause

In RowPagination.ts, _autoResetPageIndex called table.resetPageIndex() without defaultState = true:

// Before
table.resetPageIndex()   // resets to initialState.pageIndex (e.g. 5 from URL restoration)
// After
table.resetPageIndex(true)  // always resets to 0

This caused issues when initialState.pagination.pageIndex was set to a non-zero value (e.g. restored from URL params). After a filter change that reduced total pages, the table would reset to the initial page (e.g. page 5) rather than page 0, leaving users on an empty/invalid page.

Changes

• packages/table-core/src/features/RowPagination.ts: pass true to resetPageIndex() in _autoResetPageIndex
• Added changeset for patch bump of @tanstack/table-core

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