docs: update Angular guide for SDK v2

[charIeszhao]

Summary

Update the Angular quick start for @logto/angular v2 and align its sections with the React guide. Replace the third-party OIDC integration with native providers and Signals, and document callback handling, user claims, and userinfo requests.

Add examples for multiple API resources, shared scopes, resource access tokens and refresh behavior, organization tokens, and Bearer request headers. Remove the obsolete restriction that prevented userinfo requests when API resources were configured.

Testing

Tested locally

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[Copilot]

🟡 Changes recommended

Guard callback handling with isSignInRedirected() to avoid rejecting direct visits.

Once you've addressed the issues Copilot identified, you can request another Copilot review.

Pull request overview

Updates the Angular quick start for @logto/angular v2 with native SDK integration, Signals, callback handling, API resources, and organization tokens.

Changes:

• Replaces the third-party OIDC integration with the first-party Angular SDK.
• Adds claims, userinfo, resource, refresh, and organization-token examples.
• Documents Bearer authorization headers and multiple resource configurations.

File summaries

File	Summary
docs/quick-starts/framework/angular/README.mdx	Updates prerequisites and SDK guidance.
docs/quick-starts/framework/angular/code/_get-organization-access-token-code.md	Adds organization-token retrieval.
docs/quick-starts/framework/angular/code/_get-access-token-code.md	Adds API access-token retrieval.
docs/quick-starts/framework/angular/code/_config-resources-with-shared-scopes-code.md	Adds shared-scope configuration.
docs/quick-starts/framework/angular/code/_config-resources-with-scopes-code.md	Adds resource-specific scopes.
docs/quick-starts/framework/angular/code/_config-resources-code.md	Adds multiple resource configuration.
docs/quick-starts/framework/angular/code/_config-organization-code.md	Adds organization scope configuration.
docs/quick-starts/framework/angular/_integration.mdx	Adds provider, routing, callback, and authentication examples. Direct callback visits should check isSignInRedirected() before calling handleSignInCallback().
docs/quick-starts/framework/angular/_installation.mdx	Updates package installation.
docs/quick-starts/framework/angular/_guide-tip.md	References the first-party SDK and sample.
docs/quick-starts/framework/angular/_get-user-information.mdx	Adds Signals-based claims and userinfo examples.
docs/quick-starts/framework/angular/_api-resources.mdx	Adds resource, organization-token, refresh, and header guidance.

Review details

• Files reviewed: 12/12 changed files
• Comments generated: 1
• Review effort level: Lite

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