chore: remove initial release props from release please

[joker23]

Note

Simplifies release-please-config.json by removing initial-release settings.

• Removed release-as and bootstrap-sha from packages/sdk/shopify-oxygen
• Removed release-as from packages/sdk/combined-browser
• No functional/code changes outside release configuration

^{Written by Cursor Bugbot for commit f061349. This will update automatically on new commits. Configure here.}

[github-actions]

@launchdarkly/js-sdk-common size report
This is the brotli compressed size of the ESM build.
Compressed size: 25394 bytes
Compressed size limit: 26000
Uncompressed size: 124693 bytes

[github-actions]

@launchdarkly/browser size report
This is the brotli compressed size of the ESM build.
Compressed size: 171170 bytes
Compressed size limit: 200000
Uncompressed size: 798483 bytes

[github-actions]

@launchdarkly/js-client-sdk-common size report
This is the brotli compressed size of the ESM build.
Compressed size: 19359 bytes
Compressed size limit: 20000
Uncompressed size: 99863 bytes

[github-actions]

@launchdarkly/js-client-sdk size report
This is the brotli compressed size of the ESM build.
Compressed size: 23342 bytes
Compressed size limit: 25000
Uncompressed size: 81374 bytes