fix(table): keep rows rendered when pageSizes prop changes at runtime

[agupta-eightfold]

SUMMARY:

Issue - If Table's internal pageSize is no longer present in an updated pagination.pageSizes prop, the pageData lookup finds no match and returns null. The table renders "No data found" with data still loaded, and only a remount recovers it.

How it happens - Pagination's mount effect persists the initial size into Table's inner pagination state, so any consumer that recomputes pageSizes later hits the mismatch. This is what blanked the Position Overview drill-in lists in vscode on window resize (found during ENG-203034 verification; product-side fix in EightfoldAI/vscode#113083).

Fix - In usePagination, normalize the merged pageSize to pageSizes[0] when pageSizes no longer contains it. In Table's pageData, replace the return-null fallthrough with a slice using the first size.

GITHUB ISSUE (Open Source Contributors)

NA

JIRA TASK (Eightfold Employees Only):

https://eightfoldai.atlassian.net/browse/ENG-205018

CHANGE TYPE:

• Bugfix Pull Request
• Feature Pull Request

TEST COVERAGE:

• Tests for this change already exist
• I have added unittests for this change

TEST PLAN:

• New unit test in Table.pagination.test.js - mounts with pageSizes: [10], re-renders with pageSizes: [9], asserts rows still render. Fails without the fix (0 rows).
• Table and Pagination suites pass (22 suites, 243 tests); the pre-commit hook runs the full repo suite.
• No behavior change when pageSize is still valid - normalization only engages on the mismatch.

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[codecov]

Codecov Report

❌ Patch coverage is 50.00000% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 85.07%. Comparing base (f22fb38) to head (2cc4d4a).

Files with missing lines	Patch %	Lines
src/components/Table/Table.tsx	0.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1157      +/-   ##
==========================================
+ Coverage   85.00%   85.07%   +0.06%     
==========================================
  Files        1230     1230              
  Lines       21587    21593       +6     
  Branches     8209     8211       +2     
==========================================
+ Hits        18351    18371      +20     
+ Misses       3150     3136      -14     
  Partials       86       86              

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