fix: remove dead isTelemetryEnabled code for jetbrains

[RomneyDa]

Description

This setting wasn't being used. It was hardcoded to true because we use (user settings === false OR ide settings === false) logic to be safe. But a user interpreted that as hardcoding telemetry to always be on, which is not the case.

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Summary by cubic

Removed dead JetBrains telemetry code and limited IDE telemetry checks to VS Code. This clarifies telemetry behavior and avoids confusion about it being always on in JetBrains.

• Refactors
  • Removed isTelemetryEnabled from the IntelliJ IDE interface, implementation, and protocol handler.
  • Dropped the "isTelemetryEnabled" message type.
  • Updated doLoadConfig to only read IDE telemetry when ideType is "vscode".

^{Written for commit 12213fb. Summary will update automatically on new commits.}

[github-actions]

✅ Review Complete

Code Review Summary

⚠️ Continue configuration error. Please verify that the assistant exists in Continue Hub.

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[cubic-dev-ai]

No issues found across 5 files

[sestinj]

🎉 This PR is included in version 1.5.1 🎉

The release is available on:

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[sestinj]

🎉 This PR is included in version 1.35.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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[sestinj]

🎉 This PR is included in version 1.31.1 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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[sestinj]

🎉 This PR is included in version 1.6.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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