fix : expect a sdkName based on the test platform

[rxlabz]

📢 Type of change

• Bugfix
• New feature
• Enhancement
• Refactoring

📜 Description

• define the sdkname based on the platform in the test
• fix the GitHub action to run pub run test . instead of pub run test test/*

💡 Motivation and Context

• Change SDK name based on platform #103 broke a test based on the sdkName

💚 How did you test it?

📝 Checklist

• I reviewed submitted code
• I added tests to verify changes
• All tests passing
• No breaking changes

🔮 Next steps

[marandaneto]

LGTM