Apply ruff/Perflint rule PERF401

PERF401 Use a list comprehension to create a transformed list

src/wheel/metadata.py

@@ -90,12 +90,10 @@ def requires_to_requires_dist(requirement: Requirement) -> str:
     if requirement.url:
         return " @ " + requirement.url
 
-    requires_dist: list[str] = []
-    for spec in requirement.specifier:
-        requires_dist.append(spec.operator + spec.version)
-
-    if requires_dist:
-        return " " + ",".join(sorted(requires_dist))
+    if requirement.specifier:
+        return " " + ",".join(
+            sorted(spec.operator + spec.version for spec in requirement.specifier)
+        )
     else:
         return ""