refactor: replace IInlineChatEditStrategy with InlineChatToolCalling for improved edit handling

[jrieken]

No description provided.

[Copilot]

Pull request overview

Refactors the Copilot inline chat editing flow to use a dedicated tool-calling loop (replacing the prior edit-strategy abstraction), and removes now-obsolete configuration/telemetry related to the previous heuristic selection-handling path.

Changes:

• Replaces IInlineChatEditStrategy-based branching with InlineChatToolCalling in the inline chat intent flow.
• Removes the inlineChat.selectionRatioThreshold experimental configuration (and its package.json/nls entries).
• Removes selection-length telemetry plumbing tied to AST/selection adjustment metadata.

Show a summary per file

File	Description
extensions/copilot/src/platform/configuration/common/configurationService.ts	Removes the InlineChatSelectionRatioThreshold config key constant.
extensions/copilot/src/extension/prompts/node/inline/test/inlineChat2Prompt.spec.tsx	Updates test import to use the new prompt module location.
extensions/copilot/src/extension/prompts/node/inline/inlineChatEditCodePrompt.tsx	Removes DocumentToAstSelectionData telemetry metadata emission and related imports.
extensions/copilot/src/extension/prompt/node/chatParticipantTelemetry.ts	Removes selection length measurements and the associated GDPR fields.
extensions/copilot/src/extension/intents/node/editCodeIntent.ts	Removes a stale commented telemetry line referencing removed metadata.
extensions/copilot/src/extension/inlineChat/node/inlineChatPrompt.tsx	Adjusts import paths after prompt/module reorganization.
extensions/copilot/package.nls.json	Removes localized description for the deleted config setting.
extensions/copilot/package.json	Removes the github.copilot.chat.inlineChat.selectionRatioThreshold configuration contribution.

Copilot's findings

• Files reviewed: 9/9 changed files
• Comments generated: 2