chore: feature gate forge-fmt (#1608)

Author: jonathanpwang

crates/sdk/Cargo.toml

@@ -54,7 +54,7 @@ snark-verifier = { workspace = true }
 snark-verifier-sdk.workspace = true
 tempfile.workspace = true
 hex.workspace = true
-forge-fmt.workspace = true
+forge-fmt = { workspace = true, optional = true }
 
 [features]
 default = ["parallel", "jemalloc", "evm-verify"]
@@ -63,6 +63,7 @@ evm-verify = [
     "evm-prove",
     "openvm-native-recursion/evm-verify",
     "dep:alloy-sol-types",
+    "dep:forge-fmt",
 ]
 bench-metrics = [
     "openvm-circuit/bench-metrics",