ghost: support isShown and isFromCache for provideInlineEdit

[ulugbekna]

No description provided.

[Copilot]

Pull request overview

This PR threads Next Edit telemetry through the Ghost Text (inline completion) pipeline to support recording whether a suggestion was shown (isShown) and whether it was served from cache (isFromCache).

Changes:

• Pass an LlmNESTelemetryBuilder through GhostText.getInlineCompletions(...) → getGhostText(...) → GhostTextComputer so the ghost-text pipeline can annotate NES telemetry.
• Mark completions as shown by calling setAsShown() when an inline completion item is displayed.
• Update internal callers and unit tests to provide the new telemetry builder parameter.

Reviewed changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
src/lib/node/chatLibMain.ts	Creates and passes an LlmNESTelemetryBuilder into ghost text inline completion requests.
src/extension/completions-core/vscode-node/lib/src/test/inlineCompletion.test.ts	Updates tests to pass the new telemetry builder parameter.
src/extension/completions-core/vscode-node/lib/src/prompt/test/prompt.ts	Updates prompt test helper to pass the new telemetry builder parameter.
src/extension/completions-core/vscode-node/lib/src/inlineCompletion.ts	Adds telemetryBuilder parameter to GhostText.getInlineCompletions(...) and propagates it to ghost text computation (including speculative requests).
src/extension/completions-core/vscode-node/lib/src/ghostText/test/ghostText.test.ts	Updates ghost text unit tests to pass the new telemetry builder parameter.
src/extension/completions-core/vscode-node/lib/src/ghostText/ghostText.ts	Adds cache detection to set telemetryBuilder.isFromCache when cached results are used.
src/extension/completions-core/vscode-node/extension/src/vscodeInlineCompletionItemProvider.ts	Sets isShown on the telemetry builder when VS Code reports an item was shown.
src/extension/completions-core/vscode-node/extension/src/ghostText/ghostTextProvider.ts	Passes telemetryBuilder.nesBuilder into GhostText.getInlineCompletions(...).