perf: Do not allocate for scope attributes that collide with reserved ones (#3548)

Signed-off-by: Arthur Silva Sens <arthursens2005@gmail.com>
Co-authored-by: Cijo Thomas <cijo.thomas@gmail.com>

Author: ArthurSens

opentelemetry-prometheus/src/lib.rs

@@ -422,6 +422,10 @@ fn get_scope_labels(scope: &InstrumentationScope) -> Vec<LabelPair> {
 
     let mut attr_labels = BTreeMap::<String, Vec<String>>::new();
     for kv in scope.attributes() {
+        if matches!(kv.key.as_str(), "name" | "version" | "schema_url") {
+            continue;
+        }
+
         let label_name = utils::sanitize_prom_kv(&format!("{SCOPE_ATTRIBUTE_PREFIX}{}", kv.key));
         if RESERVED_SCOPE_LABELS.contains(&label_name.as_str()) {
             continue;