Instruct Coder to use replace when search and replace fails

[JonasHelming]

fixed #15060

What it does

• Add instructions to the coder prompt to fall back to full file rewrite if replace fails continously (this is already mentioned in the function description, but sometimes does not work)
• Clarify more precisely that only one successful function call per file is allowed (previous description might imply you are only allow to call one function even if it fails)

How to test

• Was tested in pre-test already
• Play around with prompts and LLMs
  Expected behavior: It uses replace when "it make sense" and rewrite when "it makes sense". It switches to rewrite if replaces fails.

Some example prompts:

@coder Rename the function toOpenAIMessage in packages/ai-openai/src/node/openai-language-model.ts to convertToOpenAIMessage

@coder Add o13 and o14-mini to the default list of open ai models in the preferences of the openai package

@coder Move the readme file to a sub direcotry called /readme

@coder Implement the interface MCPServerManager in the same file (packages/ai-mcp/src/common/mcp-server-manager.ts). Don't ask me anything, jut do it.

@coder Remove the prefix "MCP" from all user message in packages/ai-mcp/src/browser/mcp-command-contribution.ts

@coder Do not display a message to the user anymore about the tools in packages/ai-mcp/src/browser/mcp-command-contribution.ts

@coder Allow the user to start already started MCP servers again in packages/ai-mcp/src/browser/mcp-command-contribution.ts

@coder please translate all of the comments in packages/ai-chat/src/browser/change-set-file-element.ts into Swahili.

Follow-ups

Breaking changes

• This PR introduces breaking changes and requires careful review. If yes, the breaking changes section in the changelog has been updated.

Attribution

Review checklist

• As an author, I have thoroughly tested my changes and carefully followed the review guidelines

Reminder for reviewers

• As a reviewer, I agree to behave in accordance with the review guidelines

[planger]

Thanks, looks good to me! 👍