fix(Table): add scroll tolerance so Scroller arrows reach the last column at fractional zoom

[ayush-raj-eightfold]

SUMMARY:

The horizontal scroll arrow buttons on <Table showScroller> can't scroll all the way to the last columns at browser zoom below 100% (e.g. 90%). The bottom scrollbar/slider works fine — only the arrow buttons fall short.

Root cause

The Scroller builds its scroll stop-points from the declared column widths (e.g. 128px), advancing with scrollOffsets.find(offset => offset > scrollLeft). At fractional zoom the browser snaps each 128px column to a slightly smaller rendered value (~127.78px at 90% / DPR 1.8) while the stop-points stay integer. So after a click targeting 128 the body settles at 127.78, and the next click's find(offset => offset > 127.78) returns 128 again → scrolling snaps right back → the arrow is stuck. At 100% zoom rendered width == declared width, which is why it only reproduces below 100%.

This is a generic Octuple bug affecting any table using showScroller with fixed-pixel columns.

Fix

Add a 1px tolerance in Scroller's onClick so the comparison skips the
boundary the scroller is already snapped to:

• right arrow: offset > scrollLeft + 1
• left arrow: offset < scrollLeft - 1
• (same for both RTL branches)

GITHUB ISSUE (Open Source Contributors)

JIRA TASK (Eightfold Employees Only):

https://eightfoldai.atlassian.net/browse/ENG-199352

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:

Tested locally -

Screen.Recording.2026-07-02.at.8.14.42.PM.mov

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[codecov]

Codecov Report

❌ Patch coverage is 88.88889% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 84.95%. Comparing base (e827228) to head (978f573).

Files with missing lines	Patch %	Lines
src/components/Table/Internal/Body/Scroller.tsx	88.88%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1140      +/-   ##
==========================================
+ Coverage   84.45%   84.95%   +0.50%     
==========================================
  Files        1230     1230              
  Lines       21533    21527       -6     
  Branches     8176     8171       -5     
==========================================
+ Hits        18185    18288     +103     
+ Misses       3262     3153     -109     
  Partials       86       86              

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[agupta-eightfold]

Looks good overall, just a minor fix pending, please check.