fix: prevent webhook deploy crash when commit data lacks modified files (#4470)

shouldDeploy passed undefined/null entries from commit.modified straight
into micromatch, which throws "Expected input to be a string" and fails
every webhook deployment when watch paths are configured. Filter out
non-string values before matching.

packages/server/src/utils/watch-paths/should-deploy.ts

@@ -2,8 +2,11 @@ import micromatch from "micromatch";
 
 export const shouldDeploy = (
 	watchPaths: string[] | null,
-	modifiedFiles: string[],
+	modifiedFiles: (string | null | undefined)[] | null | undefined,
 ): boolean => {
 	if (!watchPaths || watchPaths?.length === 0) return true;
-	return micromatch.some(modifiedFiles, watchPaths);
+	const files = (modifiedFiles ?? []).filter(
+		(file): file is string => typeof file === "string",
+	);
+	return micromatch.some(files, watchPaths);
 };