add case task-no-trailing-newline

Author: wan9chi

packages/cli/snap-tests/task-no-trailing-newline/package.json

@@ -0,0 +1,5 @@
+{
+  "scripts": {
+    "hello": "echo -n foo && echo bar"
+  }
+}

packages/cli/snap-tests/task-no-trailing-newline/snap.txt

@@ -0,0 +1,20 @@
+> vite run hello
+$ echo -n foo
+foo$ echo bar
+bar
+
+━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+    Vite+ Task Runner • Execution Summary
+━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
+
+Statistics:   2 tasks • 0 cache hits • 2 cache misses 
+Performance:  0% cache hit rate
+
+Task Details:
+────────────────────────────────────────────────
+  [1] hello(subcommand 0): $ echo -n foo ✓
+      → Cache miss: no previous cache entry found
+  ·······················································
+  [2] hello: $ echo bar ✓
+      → Cache miss: no previous cache entry found
+━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

packages/cli/snap-tests/task-no-trailing-newline/steps.json

@@ -0,0 +1,8 @@
+{
+  "env": {
+    "VITE_DISABLE_AUTO_INSTALL": "1"
+  },
+  "commands": [
+    "vite run hello"
+  ]
+}