fix(ci/benchmarks): use git tree hash for benchmarks

Replace commit hash with git tree hash when caching benchmark results.
This resolves caching issues where the exact commit hash may not have
been run in the cache, ensuring consistent benchmark result lookup
across cached and non-cached runs. This particularly affects ci-full
runs that were squashed in the merge queue.

Also removes unused p2p benchmark cache upload that had no corresponding
download.

Author: ludamad

bootstrap.sh

@@ -314,7 +314,7 @@ function bench {
   rm -rf bench-out
   mkdir -p bench-out
   bench_merge
-  cache_upload bench-$COMMIT_HASH.tar.gz bench-out/bench.json
+  cache_upload bench-$(git rev-parse HEAD^{tree}).tar.gz bench-out/bench.json
 }
 
 function release_github {

ci.sh

@@ -321,7 +321,7 @@ case "$cmd" in
     print_usage
     ;;
   "gh-bench")
-    cache_download bench-$COMMIT_HASH.tar.gz
+    cache_download bench-$(git rev-parse HEAD^{tree}).tar.gz
     ;;
   "uncached-tests")
     if [ -z "$CI_REDIS_AVAILABLE" ]; then

yarn-project/p2p/bootstrap.sh

@@ -14,8 +14,6 @@ function bench {
     ./testbench/run_testbench.sh $config ./bench-out/$config
   done
   ./testbench/consolidate_benchmarks.sh
-
-  cache_upload yarn-project-p2p-bench-results-$COMMIT_HASH.tar.gz ./bench-out/p2p-bench.json
 }
 
 case "$cmd" in