Ignore baseline diffs that use unsupported options

[andrewbranch]

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[Copilot]

Pull Request Overview

This PR updates the diagnostic verification logic to ignore baseline diffs when unsupported options are used. The changes include:

• Using a new helper function, containsUnsupportedOptions(), to determine whether unsupported options exist.
• Modifying the IsSubmoduleAccepted flag based on the new function.
• Introducing additional checks for module kinds, BaseUrl, and RootDirs in the new helper function.

Comments suppressed due to low confidence (2)

internal/testrunner/compiler_runner.go:438

• Ensure that unit tests cover all branches of the containsUnsupportedOptions function to validate its behavior across various supported and unsupported configuration scenarios.

func (c *compilerTest) containsUnsupportedOptions() bool {

internal/testrunner/compiler_runner.go:449

• Verify whether checking only for nil is sufficient for c.options.RootDirs, or if an explicit check for an empty slice is required to accurately capture unsupported configurations.

if c.options.RootDirs != nil {