docs(sp-truncated): updated sp-truncated pattern

[Rajdeepc]

Description

Comprehensive documentation rewrite for sp-truncated with full API reference, accessibility guidelines, usage patterns, and practical examples across multiple component contexts.

Added sp-truncated to bundle/elements.ts to ensure proper component registration and CSS rendering in documentation demo blocks.

Motivation and context

Related issue(s)

• fixes SWC-431

Screenshots (if appropriate)

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Author's checklist

• I have read the CONTRIBUTING and PULL_REQUESTS documents.
• I have reviewed at the Accessibility Practices for this feature, see: Aria Practices
• I have added automated tests to cover my changes.
• I have included a well-written changeset if my change needs to be published.
• I have included updated documentation if my change required it.

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Reviewer's checklist

• Includes a Github Issue with appropriate flag or Jira ticket number without a link
• Includes thoughtfully written changeset if changes suggested include patch, minor, or major features
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• Validated on all supported browsers
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• Descriptive Test Statement

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• Did it pass in Desktop?
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[changeset-bot]

⚠️ No Changeset found

Latest commit: 1fa7876

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[github-actions]

📚 Branch Preview

• Documentation Site
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🔍 Visual Regression Test Results

When a visual regression test fails (or has previously failed while working on this branch), its results can be found in the following URLs:

• Spectrum | Light | Medium | LTR
• Spectrum | Dark | Large | RTL
• Express | Light | Medium | LTR
• Express | Dark | Large | RTL
• Spectrum-two | Light | Medium | LTR
• Spectrum-two | Dark | Large | RTL
• High Contrast Mode | Medium | LTR

Deployed to Azure Blob Storage: pr-5839

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[github-actions]

Tachometer results

Currently, no packages are changed by this PR...

[coveralls]

Pull Request Test Coverage Report for Build 18939955006

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 97.964%

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Totals
Change from base Build 18885025935:	0.0%
Covered Lines:	34259
Relevant Lines:	34788

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💛 - Coveralls

[Rajdeepc]

Known issue: sp-tooltip is getting cut off due to max-width constraint for long words. Will be tacked in SWC-1331