test: fix contract tests

[joker23]

• chore: disable secure hashing capability in electron contract test
• test: fix contract test client entities

[github-actions]

@launchdarkly/browser size report
This is the brotli compressed size of the ESM build.
Compressed size: 179641 bytes
Compressed size limit: 200000
Uncompressed size: 831521 bytes

[github-actions]

@launchdarkly/js-sdk-common size report
This is the brotli compressed size of the ESM build.
Compressed size: 26334 bytes
Compressed size limit: 29000
Uncompressed size: 129104 bytes

[github-actions]

@launchdarkly/js-client-sdk-common size report
This is the brotli compressed size of the ESM build.
Compressed size: 38887 bytes
Compressed size limit: 39000
Uncompressed size: 212703 bytes

[github-actions]

@launchdarkly/js-client-sdk size report
This is the brotli compressed size of the ESM build.
Compressed size: 31990 bytes
Compressed size limit: 34000
Uncompressed size: 114342 bytes

[joker23]

I don't think the issue is in the contract test implementation