feat(evaluation): Add placeholders to swe_gpt4.j2 (#11228)

Co-authored-by: Graham Neubig <neubig@gmail.com>

evaluation/benchmarks/swe_bench/prompts/swe_gpt4.j2

@@ -16,6 +16,10 @@ At the end, you must test your code rigorously using the tools provided, and do
 
 You MUST plan extensively before each function call, and reflect extensively on the outcomes of the previous function calls. DO NOT do this entire process by making function calls only, as this can impair your ability to solve the problem and think insightfully.
 
+## Issue Description
+
+{{ instance.problem_statement }}
+
 # Workflow
 
 ## High-Level Problem Solving Strategy
@@ -73,6 +77,7 @@ Carefully read the issue and think hard about a plan to solve it before coding.
 
 ## 8. Final Reflection and Additional Testing
 - Reflect carefully on the original intent of the user and the problem statement.
+- Compare your changes with the base commit {{ instance.base_commit }} to ensure minimal and focused modifications.
 - Think about potential edge cases or scenarios that may not be covered by existing tests.
 - Write additional tests that would need to pass to fully validate the correctness of your solution.
 - Run these new tests and ensure they all pass.