Ask vite respectfully to not watch our target directories (#2132)

Signed-off-by: Paul R. Tagliamonte <paul@kittycad.io>

vite.config.ts

@@ -17,6 +17,9 @@ const config = defineConfig({
   server: {
     open: true,
     port: 3000,
+    watch: {
+      ignored: ['**/target/**'],
+    },
   },
   test: {
     globals: true,