fix(compiler-core): correctly handle empty expression checks for v-bind shorthand

Author: edison1105

packages/compiler-core/src/transforms/transformVBindShorthand.ts

@@ -15,7 +15,8 @@ export const transformVBindShorthand: NodeTransform = (node, context) => {
       if (
         prop.type === NodeTypes.DIRECTIVE &&
         prop.name === 'bind' &&
-        !prop.exp
+        (!prop.exp ||
+          (prop.exp.type === NodeTypes.SIMPLE_EXPRESSION && !prop.exp.content))
       ) {
         const arg = prop.arg!
         if (arg.type !== NodeTypes.SIMPLE_EXPRESSION || !arg.isStatic) {