move removing v into version cleaning

npm_and_yarn/lib/dependabot/npm_and_yarn/version.rb

@@ -63,8 +63,9 @@ def self.semver_for(version)
       sig { override.params(version: VersionParameter).void }
       def initialize(version)
         version = clean_version(version)
+
         @version_string = T.let(version.to_s, String)
-        version = version.gsub(/^v/, "") if version.is_a?(String)
+
         @build_info = T.let(nil, T.nilable(String))
 
         version, @build_info = version.to_s.split("+") if version.to_s.include?("+")
@@ -74,10 +75,13 @@ def initialize(version)
 
       sig { params(version: VersionParameter).returns(VersionParameter) }
       def clean_version(version)
-        # Check if version is a string before attempting to match
-        # Matches @ followed by x.y.z (digits separated by dots)
-        if version.is_a?(String) && (match = version.match(/@(\d+\.\d+\.\d+)/))
-          return match[1] # Just "4.5.3"
+        if version.is_a?(String)
+          # Check if version is a string before attempting to match
+          # Matches @ followed by x.y.z (digits separated by dots)
+          if (match = version.match(/@(\d+\.\d+\.\d+)/))
+            version = match[1] # Just "4.5.3"
+          end
+          version = version.gsub(/^v/, "") if version.is_a?(String)
         end
 
         # If version is not a string or no match found, return original version