Fix issue loading SigV4 config

[dylan-apollo]

#7389 switched from aws-lc to ring for crypto when talking to AWS. That change requires manually configuring a bunch of settings for AWS' SDK since we turned off default features. We missed a few configuration bits in that PR, which resulted in some SigV4 configurations failing at startup.

This PR addresses the issue by filling in the missing pieces.

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Checklist

Complete the checklist (and note appropriate exceptions) before the PR is marked ready-for-review.

• Changes are compatible[^1]
• Documentation[^2] completed
• Performance impact assessed and acceptable
• Metrics and logs are added[^3] and documented
• Tests added and passing[^4]
  • Unit Tests
  • Integration Tests
  • Manual Tests

Exceptions

[apollo-librarian]

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File Changes

0 new, 11 changed, 0 removed

* (developer-tools)/apollo-mcp-server/(latest)/command-reference.mdx
* (developer-tools)/apollo-mcp-server/(latest)/guides/index.mdx
* (developer-tools)/kotlin/(latest)/index.mdx
* (developer-tools)/kotlin/(latest)/advanced/apollo-ast.mdx
* (developer-tools)/kotlin/(latest)/advanced/compiler-plugins.mdx
* (developer-tools)/kotlin/(latest)/advanced/no-runtime.mdx
* (developer-tools)/kotlin/(latest)/caching/http-cache.mdx
* (developer-tools)/kotlin/(latest)/caching/normalized-cache.mdx
* (developer-tools)/kotlin/(latest)/testing/apollo-debug-server.mdx
* (developer-tools)/kotlin/(latest)/testing/mocking-graphql-responses.mdx
* graphos/routing/(latest)/performance/caching/in-memory.mdx

Build ID: 99a2401e58b85f678b2a1cae

URL: https://www.apollographql.com/docs/deploy-preview/99a2401e58b85f678b2a1cae

[dylan-apollo]

I'm not sure why all these reformatted for me but didn't trip CI previously 🤔