gofmt mcp_test.go too (V-623)

Second file behind the first: fmt-check stops at the first failure, so the
mcp sweep's test file was invisible until ecosystem_acts.go was clean.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

internal/mcp/mcp_test.go

@@ -662,7 +662,7 @@ func (t *emptyFrameTransport) Call(ctx context.Context, req *rpcRequest) (*rpcRe
 }
 
 func (t *emptyFrameTransport) Notify(context.Context, string, any) error { return nil }
-func (t *emptyFrameTransport) Close() error                             { return nil }
+func (t *emptyFrameTransport) Close() error                              { return nil }
 
 func TestResultlessResponseIsNotSuccess(t *testing.T) {
 	c := newClient("empty", &emptyFrameTransport{})