fix: ci: avoid failing the CI if the bench result is not present

This is mostly because when we are adding a new benchmark in a PR; the benchmark won't be yet available in main, therefore the CI will fail.

.github/workflows/ci_bench_levm_in_pr.yaml

@@ -38,19 +38,19 @@ jobs:
           make revm-comparison-ci
           {
             echo "#### Benchmark Results: Factorial";
-            cat Factorial.md;
+            cat Factorial.md || echo "No results";
             echo "#### Benchmark Results: Factorial - Recursive";
-            cat FactorialRecursive.md;
+            cat FactorialRecursive.md || echo "No results";
             echo "#### Benchmark Results: Fibonacci";
-            cat Fibonacci.md;
+            cat Fibonacci.md || echo "No results";
             echo "#### Benchmark Results: ManyHashes";
-            cat ManyHashes.md;
+            cat ManyHashes.md || echo "No results";
             echo "#### Benchmark Results: ERC20 - Transfer";
-            cat ERC20Transfer.md;
+            cat ERC20Transfer.md || echo "No results";
             echo "#### Benchmark Results: ERC20 - Mint";
-            cat ERC20Mint.md;
+            cat ERC20Mint.md || echo "No results";
             echo "#### Benchmark Results: ERC20 - Approval";
-            cat ERC20Approval.md;
+            cat ERC20Approval.md || echo "No results";
           } > pr_result.md
 
       - name: Upload PR results
@@ -90,19 +90,19 @@ jobs:
           make revm-comparison-ci
           {
             echo "#### Benchmark Results: Factorial";
-            cat Factorial.md;
+            cat Factorial.md || echo "No results";
             echo "#### Benchmark Results: Factorial - Recursive";
-            cat FactorialRecursive.md;
+            cat FactorialRecursive.md || echo "No results";
             echo "#### Benchmark Results: Fibonacci";
-            cat Fibonacci.md;
+            cat Fibonacci.md || echo "No results";
             echo "#### Benchmark Results: ManyHashes";
-            cat ManyHashes.md;
+            cat ManyHashes.md || echo "No results";
             echo "#### Benchmark Results: ERC20 - Transfer";
-            cat ERC20Transfer.md;
+            cat ERC20Transfer.md || echo "No results";
             echo "#### Benchmark Results: ERC20 - Mint";
-            cat ERC20Mint.md;
+            cat ERC20Mint.md || echo "No results";
             echo "#### Benchmark Results: ERC20 - Approval";
-            cat ERC20Approval.md;
+            cat ERC20Approval.md || echo "No results";
           } > main_result.md
 
       - name: Upload main results