fix(env): Do not print stacktrace for locate workspace (matter-labs#2111

)

## What ❔

Do not throw stack trace for already compiled binaries
## Why ❔

Confusing for users
## Checklist

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Signed-off-by: Danil <[email protected]>

core/lib/utils/src/env.rs

@@ -52,10 +52,12 @@ pub fn locate_workspace() -> Option<&'static Path> {
     WORKSPACE
         .get_or_init(|| {
             let result = locate_workspace_inner();
-            if let Err(err) = &result {
+            if result.is_err() {
                 // `get_or_init()` is guaranteed to call the provided closure once per `OnceCell`;
                 // i.e., we won't spam logs here.
-                tracing::warn!("locate_workspace() failed: {err:?}");
+                tracing::info!(
+                    "locate_workspace() failed. You are using an already compiled version"
+                );
             }
             result.ok()
         })