Inaccurate package coverage percentage on validate

[aly76]

Describe the bug
The package coverage percentage calculated for unlocked packages in orchestrator:validate is inaccurate. Classes and triggers that are not touched by any test class are not accounted for in the calculation of package coverage.

This leads to potential scenarios where an unlocked package satisfies the coverage requirement, despite there being an overwhelming number of classes in the package not touched by the execution of test classes.

To Reproduce
Steps to reproduce the behavior:

Expected behavior
The package coverage calculation should include the lines from classes in the package that have not been touched by any test classes.

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Platform Details (please complete the following information):

• OS:
• Version [e.g. CLI Version eg: 1.6.6]
• Salesforce CLI(sfdx cli) Version:
• CI Platform:

Additional context
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