Add backend name dropdown and update version constraints in bug report template

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -122,8 +122,21 @@ body:
       #multiple: false
       options:
         -
+        - "<2.2.0"
         - "2.2.x"
-        - "2.5.x"
+        - ">=2.5"
+    validations:
+      required: true
+
+  - type: dropdown
+    id: backend_name
+    attributes:
+      label: Backend name | 解析后端
+      #multiple: false
+      options:
+        -
+        - "vlm"
+        - "pipeline"
     validations:
       required: true