feat(amazon-photos): Update OAuth scopes to amazonphotos namespace

[vipulkala95]

Summary

Updates the Amazon Photos auth extension (AmazonOAuthConfig) to use the correct amazonphotos:: OAuth scope namespace and removes export scopes, which are not used by this import only integration.

Changes

• Migrate all import scopes from the photos:: prefix to the amazonphotos:: prefix (images, videos, albums).
• Return an empty map from getExportScopes() — Amazon Photos supports import only, so no export scopes are requested.
• Update AmazonOAuthConfigTest to match: assert the new amazonphotos:: import scopes and replace the two export-scope tests with a single exportScopesEmpty test.