[FEAT]: use code referencing when suggestions matching public code enabled and blocks/aborts the codegeneration

[harrybin]

When working on a fork of public repositories and start modifying the code using copilot suggestions those a revery ofthen blocked because of matching public code.
When this (the block) happens the source code reference should be shown. Then the user can have a look and decide himself to manaully copy or simply use the code as some kind of template.

Reproduction:

• Fork: todo-react
• tell copilot edit to turn the project into a TypeScript project (add all *.jsx files)
  ==> copilot starts transforming, but the Todo.jsx always causes
  "Sorry, the response matched public code so it was blocked. Please rephrase your prompt...."