🐛 fix wrong location of auto-generated .prop modifier

Author: mysticatea

Diff for: src/template/index.ts

@@ -185,7 +185,8 @@ function parseDirectiveKeyStatically(
         directiveKey.name.rawName === "." &&
         !directiveKey.modifiers.some(isPropModifier)
     ) {
-        const pos = (directiveKey.argument || directiveKey.name).range[1]
+        const pos =
+            (directiveKey.argument || directiveKey.name).range[1] - offset
         const propModifier = createIdentifier(pos, pos, "prop")
         directiveKey.modifiers.unshift(propModifier)
     }

Diff for: test/fixtures/ast/v-bind-prop-shorthand/ast.json

@@ -189,16 +189,16 @@
                                     {
                                         "type": "VIdentifier",
                                         "range": [
-                                            42,
-                                            42
+                                            22,
+                                            22
                                         ],
                                         "loc": {
                                             "start": {
-                                                "column": 31,
+                                                "column": 11,
                                                 "line": 2
                                             },
                                             "end": {
-                                                "column": 31,
+                                                "column": 11,
                                                 "line": 2
                                             }
                                         },