fix(svelte-check): ignore Unix domain sockets in file watcher (#2931)

svelte-check crashes when encountering Unix domain sockets (e.g., .sock files)
in watch mode because chokidar cannot watch these special files. This adds a
check to ignore sockets using stats.isSocket(), preventing the crash and
allowing svelte-check to continue operating normally.

chore: add changeset for unix socket fix

Author: tylergannon

.changeset/fix-unix-sockets.md

@@ -0,0 +1,5 @@
+---
+'svelte-check': patch
+---
+
+fix: ignore Unix domain sockets in file watcher to prevent crashes

packages/svelte-check/src/index.ts

@@ -94,6 +94,7 @@ class DiagnosticsWatcher {
                 if (
                     path.includes('node_modules') ||
                     path.includes('.git') ||
+                    stats?.isSocket() ||
                     (stats?.isFile() &&
                         (!FILE_ENDING_REGEX.test(path) || VITE_CONFIG_REGEX.test(path)))
                 ) {