fix(#2801): fix Angular LTS initial tab example

[bdfranck]

This PR resolves GovAlta/ui-components#2801 by using a Copilot Agent with my instructions from #418. Here is Copilot's summary:

Summary of the Fix

I have successfully fixed the documentation issue reported in GitHub Issue #2801. Here's what was corrected:

Problem

The initial tab example for Angular LTS (old version) was incorrectly showing:

<goa-tabs initialTab={2}>

Solution

I corrected it to use the proper Angular syntax:

<goa-tabs initialtab="2">

Details of the Change

1. File changed: set-a-specific-tab-to-be-active.tsx
2. Location: Line 116 in the Angular old version code example
3. Change: initialTab={2} → initialtab="2"

Why This Fix is Correct

According to the component properties defined in the Tabs.tsx file:

• Angular LTS (old version): Property name is "initialtab" (lowercase) with string value in quotes
• React (old version): Property name is "initialTab" (camelCase) with curly braces for numbers
• Angular 18+ (new version): Uses Angular property binding syntax [initialTab]="2"

The issue specifically mentioned "Angular 3.2.2" and "Angular LTS" which corresponds to the old version in this documentation system. The fix ensures that the documentation now shows the correct syntax for Angular LTS users.

###Verification

• The development server started successfully without errors
• All other examples in the codebase remain unchanged and correct
• The fix addresses exactly what was described in the GitHub issue

The documentation now correctly shows how to use the initialtab property in Angular LTS, which resolves GitHub Issue #2801.

[netlify]

✅ Deploy Preview for abgov-ui-component-docs ready!

Name	Link
🔨 Latest commit	6082294
🔍 Latest deploy log	https://app.netlify.com/projects/abgov-ui-component-docs/deploys/68a3528526b8fb0008690144
😎 Deploy Preview	https://deploy-preview-419--abgov-ui-component-docs.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.
Lighthouse	1 paths audited Performance: 36 Accessibility: 93 Best Practices: 100 SEO: 83 PWA: - View the detailed breakdown and full score reports

---

To edit notification comments on pull requests, go to your Netlify project configuration.

[ArakTaiRoth]

@bdfranck Small issue that has nothing to do with this fix, this fix is great actually. But when I go to the example, the initialTab in the window isn't set to the second tab, it's still the first tab. This is in production now and must have been missed by me. If we can fix it in this PR, great, if not that's fine, let me know and I'll make another story for it.

[bdfranck]

@ArakTaiRoth Yeah, these one or two line changes feel much more appropriate for an agent than the slot one.

This issue sounds related to some similar tab issues. I'll take a look and make a new ticket.

[ArakTaiRoth]

@bdfranck Nevermind, I can't replicate on production anymore. Can you merge alpha into this PR? Potentially it was fixed in the last push to production which means it was fixed in Alpha, potentially after you made this PR

[bdfranck]

@ArakTaiRoth K, I've merged the latest alpha into this branch. 👍