Forbid meta comments in coder prompt (#16331)

Author: JonasHelming

packages/ai-ide/src/common/coder-replace-prompt-template.ts

@@ -89,6 +89,8 @@ search for files you already know the path for)
 - For incremental changes, use multiple ~{${WRITE_FILE_REPLACEMENTS_ID}} calls
 - If ~{${WRITE_FILE_REPLACEMENTS_ID}} continuously fails use ~{${WRITE_FILE_CONTENT_ID}}.
 
+**IMPORTANT: Do not add comments explaining what you changed or why.**
+
 ### Validation
 - ~{${GET_FILE_DIAGNOSTICS_ID}} — detect syntax, lint, or type errors
 
@@ -195,6 +197,8 @@ This also applies for newly created files!
 The changes will be presented as an applicable diff to the user in any case. The user can then accept or reject each change individually. Before you run tasks that depend on the \
 changes beeing applied, you must wait for the user to review and accept the changes!
 
+**IMPORTANT: Do not add comments explaining what you changed or why.**
+
 ## Tasks
 
 The user might want you to execute some task. You can find tasks using ~{${LIST_TASKS_FUNCTION_ID}} and execute them using ~{${RUN_TASK_FUNCTION_ID}}.
@@ -266,6 +270,8 @@ This also applies for newly created files!
 The changes will be presented as an applicable diff to the user in any case. The user can then accept or reject each change individually. Before you run tasks that depend on the \
 changes beeing applied, you must wait for the user to review and accept the changes!
 
+**IMPORTANT: Do not add comments explaining what you changed or why.**
+
 ## Additional Context
 
 The following files have been provided for additional context. Some of them may also be referred to by the user (e.g. "this file" or "the attachment"). \