test: migrate stats/base/dists/weibull/quantile to ULP-based assertions

[aryan7071]

Resolves a part of #11352

Description

What is the purpose of this pull request?

This pull request:

• migrates the test suite for stats/base/dists/weibull/quantile from relative tolerance (abs/EPS-based) assertions to ULP difference assertions using @stdlib/assert/is-almost-same-value.
• updates test/test.factory.js, test/test.native.js, and test/test.quantile.js.
• removes the now-unused abs and EPS imports and the corresponding delta/tol variable declarations, collapsing each if/else exact-match-or-tolerance branch into a single isAlmostSameValue assertion.

Measured minimum ULP bounds:

Fixture	ULP
bothlarge	0
large shape	1
large scale	6

Related Issues

Does this pull request have any related issues?

This pull request has the following related issues:

• [RFC]: Migrate math/base/special packages from relative tolerance testing to ULP difference testing (tracking issue) #11352

Questions

Any questions for reviewers of this pull request?

No.

Other

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No.

Checklist

Please ensure the following tasks are completed before submitting this pull request.

• Read, understood, and followed the contributing guidelines.

AI Assistance

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{{TODO: add disclosure if applicable}}

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[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
stats/base/dists/weibull/quantile	$\\color{green}294/294$ $\\color{green}+100.00\\%$	$\\color{green}25/25$ $\\color{green}+100.00\\%$	$\\color{green}4/4$ $\\color{green}+100.00\\%$	$\\color{green}294/294$ $\\color{green}+100.00\\%$

The above coverage report was generated for the changes in this PR.

[Planeshifter]

⚠️ Issue Reference Review

An automated check found potentially unrelated issue/PR references in this PR:

Reference	Assessment	Reasoning
#11352	suspicious	Issue #11352 is an RFC explicitly scoped to migrating math/base/special packages from relative-tolerance testing to ULP-difference testing, but this PR modifies tests in stats/base/dists/weibull/quantile, a different package tree not covered by that RFC's stated scope.

Why this matters: GitHub automatically closes issues referenced with
closing keywords (Resolves, Closes, Fixes) when the PR is merged. Incorrect
references can accidentally close unrelated issues.

What to do:

• If the reference is correct, no action needed. This check may produce
  false positives.
• If the reference is incorrect, please update your PR description.

This assessment was generated by an AI model and is informational only.

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Generated by Claude Code