fix: (part) suppress false warnings "Context access might be invalid" for secrets/vars

[davidruzicka]

Users experience false "Context access might be invalid" warnings for repository secrets and variables because of temporarily unavailable context during language server initialization.
This pull request is part of the fix and introduces a new configuration option to control how secrets and variables validation is handled in GitHub Actions workflow files.

Partially fixes issue #222

Depends on PR223 action/languageservices

Configuration enhancements:

• Added a new setting github-actions.validation.secrets to package.json, allowing users to choose between "auto", "always", or "never" for secrets/variables validation in workflow files. This setting controls when warnings about secrets access are shown.

Language server dependency:

• Imported the new SecretsValidationMode type from the language server initialization options in src/workflow/languageServer.ts.

Mentioned setting:

• auto (default) - suppresses warnings when repository context is unavailable (e.g., timing issues during initialization)
• always - shows warnings even when context is incomplete (same as without this fix)
• never - disables secrets/variables validation entirely

Unfixed problem:

Fixed:

[Copilot]

Pull request overview

This PR introduces a new configuration option to address false warnings about context access for secrets and variables in GitHub Actions workflow files. The change allows users to control when validation warnings are displayed, with a default "auto" mode that suppresses warnings when repository context is temporarily unavailable during initialization.

• Added github-actions.validation.secrets setting with three modes: "auto" (default), "always", and "never"
• Integrated the new setting into the language server initialization to pass the validation mode to the language server
• Created a helper function getSecretsValidationMode() to retrieve the configuration value

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
package.json	Adds the new github-actions.validation.secrets configuration property with enum values and descriptions
src/workflow/languageServer.ts	Imports SecretsValidationMode type, implements getSecretsValidationMode() helper function, and passes the configuration to language server initialization options

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated no new comments.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.