[Test] Enable code cov for V1 and enable push trigger (#1164)

### What this PR does / why we need it?
- Enable code cov for V1
- Enable push triggered job

### Does this PR introduce _any_ user-facing change?
No

### How was this patch tested?
CI passed

Signed-off-by: Yikun Jiang <yikunkero@gmail.com>

requirements-dev.txt

@@ -11,3 +11,4 @@ types-jsonschema
 xgrammar
 zmq
 types-psutil
+pytest-cov