Remove redundant z-index from FulllWidth style of BitButton (#12167)

[msynk]

closes #12167

Summary by CodeRabbit

• Style
  • Refined button styling by removing unnecessary stacking context configuration from full-width button layouts.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro

Run ID: cc687903-1347-4fbe-b68e-56e36739a053

📥 Commits

Reviewing files that changed from the base of the PR and between 9d641bf and e5a2705.

📒 Files selected for processing (1)

• src/BlazorUI/Bit.BlazorUI/Components/Buttons/Button/BitButton.scss

💤 Files with no reviewable changes (1)

• src/BlazorUI/Bit.BlazorUI/Components/Buttons/Button/BitButton.scss

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Walkthrough

A single z-index property was removed from the full-width button flow styling rule in the BitButton SCSS component. This modification addresses z-index stacking context issues without altering other button-related rules or functionality.

Changes

Cohort / File(s)	Summary
Button Styling Z-Index Fix src/BlazorUI/Bit.BlazorUI/Components/Buttons/Button/BitButton.scss	Removed z-index: $zindex-base; declaration from .bit-btn-flw rule, leaving width: 100%; as the sole property.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Poem

Hoppy changes from this rabbit's eye,
One z-index less—no stacking to deny,
Full-width buttons, clean and bright,
No layer chaos, just pure delight! 🐰✨

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The PR title clearly and specifically describes the main change: removing a redundant z-index declaration from BitButton's FullWidth style.
Linked Issues check	✅ Passed	The PR removes the redundant z-index from BitButton's FullWidth style, directly addressing the z-index bugs reported in issue #12167.
Out of Scope Changes check	✅ Passed	The change is narrowly scoped to removing one line (z-index declaration) from BitButton.scss, directly related to resolving the linked issue about z-index problems.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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[Copilot]

Pull request overview

Removes an explicit z-index from the BitButton “FullWidth” style to avoid unintended stacking/overlap behavior (per #12167) while keeping z-index only on button variants that are actually positioned (e.g., floating buttons).

Changes:

• Removed z-index: $zindex-base; from .bit-btn-flw (full-width button) styling.