style: inline InvalidScopeError raise to fit on one line

Collapses the multi-line raise into a single line now that the message
fits within the line length limit.

Author: enjoykumawat

src/mcp/shared/auth.py

@@ -78,9 +78,7 @@ def validate_scope(self, requested_scope: str | None) -> list[str] | None:
         allowed = set(self.scope.split())
         if not requested.issubset(allowed):
             invalid = requested - allowed
-            raise InvalidScopeError(
-                f"Client was not registered with scope(s): {' '.join(sorted(invalid))}"
-            )
+            raise InvalidScopeError(f"Client was not registered with scope(s): {' '.join(sorted(invalid))}")
         return requested_scopes
 
     def validate_redirect_uri(self, redirect_uri: AnyUrl | None) -> AnyUrl: