Cleanup dotfiles in dist (#8092)

* fix(#7933, plt-789): cleanup dotfiles during build

* chore: add changeset

Author: natemoo-re

.changeset/eleven-wasps-teach.md

@@ -0,0 +1,5 @@
+---
+'astro': patch
+---
+
+Ensure dotfiles are cleaned during static builds

packages/astro/src/core/build/static-build.ts

@@ -352,6 +352,8 @@ async function cleanServerOutput(opts: StaticBuildOptions) {
 	// The SSR output is all .mjs files, the client output is not.
 	const files = await glob('**/*.mjs', {
 		cwd: fileURLToPath(out),
+		// Important! Also cleanup dotfiles like `node_modules/.pnpm/**`
+		dot: true,
 	});
 	if (files.length) {
 		// Remove all the SSR generated .mjs files