docs: fix Configuration.Builder examples to include AutoEnvAttributes parameter

[kinyoklion]

Requirements

• I have added test coverage for new or changed functionality
• I have followed the repository's pull request submission guidelines
• I have validated my changes against all supported platform versions

No test changes needed — this PR only modifies XML doc comments. Compilation of the updated examples was verified using a temporary test project.

Related issues

N/A — identified during a documentation audit of client-side SDK examples.

Describe the solution you've provided

All Configuration.Builder code examples in the client SDK's XML doc comments were using the outdated single-parameter signature (Configuration.Builder(key)), which no longer compiles. The current builder requires an AutoEnvAttributes parameter.

This PR updates every affected doc example across 12 source files in pkgs/sdk/client/src/ to use the fully-qualified form ConfigurationBuilder.AutoEnvAttributes.Enabled, since AutoEnvAttributes is a nested enum inside ConfigurationBuilder and the short form does not resolve without a using static directive.

Describe alternatives you've considered

• Using the short form AutoEnvAttributes.Enabled — does not compile without a using static import, which would be misleading in doc examples.

Additional context

Key items for review:

• Completeness — please verify no outdated Configuration.Builder(key) examples were missed. A grep for the single-argument pattern against pkgs/sdk/client/src/ returns zero results after this change.
• Note that the Components.Plugins() example already had the correct two-argument signature and was intentionally left unchanged.
• These are purely doc comment changes (no functional code modified).

Human review checklist

• Verify ConfigurationBuilder.AutoEnvAttributes.Enabled is the preferred form for doc examples (vs. adding a using static import to examples)
• Confirm no doc examples were missed — grep -r 'Configuration.Builder(sdkKey)' pkgs/sdk/client/src/ and grep -r 'Configuration.Builder(mobileKey)' pkgs/sdk/client/src/ should return zero non-qualified results
• Note: some pre-existing issues exist in doc examples (e.g. references to AllAttributesPrivate, StartWaitTime on the builder) — those are out of scope for this PR

Updates since last revision

Changed all examples from the short form AutoEnvAttributes.Enabled to the fully-qualified ConfigurationBuilder.AutoEnvAttributes.Enabled, per reviewer feedback. Verified compilation with a temporary test project that exercises all updated patterns.

Link to Devin session: https://app.devin.ai/sessions/c465b9ad05c7492880221b219b299142
Requested by: @kinyoklion

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[kinyoklion]

Does this need to be ConfigurationBuilder.AutoEnvAttributes.Enabled?

[devin-ai-integration]

Good catch — you're right, AutoEnvAttributes is a nested enum inside ConfigurationBuilder, so the short form doesn't compile. I've pushed a fix using the fully-qualified ConfigurationBuilder.AutoEnvAttributes.Enabled in all doc examples. Verified it compiles with a temporary test project.