fix: make compatible with old pattern

TODO: remove the >signer pattern

Signed-off-by: Vitor Mattos <vitor@php.rio>

tests/integration/features/bootstrap/FeatureContext.php

@@ -125,15 +125,12 @@ protected function beforeRequest(string $fullUrl, array $options): array {
 	}
 
 	protected function parseText(string $text): string {
-		$patterns = [
-			'/<SIGN_UUID>/',
-			'/<BASE_URL>/',
-		];
-		$replacements = [
-			$this->signer['sign_uuid'] ?? null,
-			$this->baseUrl . '/index.php',
-		];
-		foreach ($this->fields as $key => $value) {
+		$fields = $this->fields;
+		if (!empty($this->signer['sign_uuid'])) {
+			$fields = $this->signer['sign_uuid'];
+		}
+		$fields['BASE_URL'] = $this->baseUrl . '/index.php';
+		foreach ($fields as $key => $value) {
 			$patterns[] = '/<' . $key . '>/';
 			$replacements[] = $value;
 		}