fix(compile-sfc): analyze v-bind shorthand usage in template

packages/compiler-sfc/__tests__/compileScript/__snapshots__/importUsageCheck.spec.ts.snap

@@ -66,14 +66,14 @@ return { get vMyDir() { return vMyDir } }
 
 exports[`dynamic arguments 1`] = `
 "import { defineComponent as _defineComponent } from 'vue'
-import { FooBar, foo, bar, unused, baz } from './x'
+import { FooBar, foo, bar, unused, baz, msg } from './x'
 
 export default /*#__PURE__*/_defineComponent({
   setup(__props, { expose: __expose }) {
   __expose();
 
 
-return { get FooBar() { return FooBar }, get foo() { return foo }, get bar() { return bar }, get baz() { return baz } }
+return { get FooBar() { return FooBar }, get foo() { return foo }, get bar() { return bar }, get baz() { return baz }, get msg() { return msg } }
 }
 
 })"

packages/compiler-sfc/__tests__/compileScript/importUsageCheck.spec.ts

@@ -45,19 +45,20 @@ test('directive', () => {
 test('dynamic arguments', () => {
   const { content } = compile(`
     <script setup lang="ts">
-    import { FooBar, foo, bar, unused, baz } from './x'
+    import { FooBar, foo, bar, unused, baz, msg } from './x'
     </script>
     <template>
       <FooBar #[foo.slotName] />
       <FooBar #unused />
       <div :[bar.attrName]="15"></div>
       <div unused="unused"></div>
       <div #[\`item:\${baz.key}\`]="{ value }"></div>
+      <FooBar :msg />
     </template>
     `)
   expect(content).toMatch(
     `return { get FooBar() { return FooBar }, get foo() { return foo }, ` +
-      `get bar() { return bar }, get baz() { return baz } }`,
+      `get bar() { return bar }, get baz() { return baz }, get msg() { return msg } }`,
   )
   assertCode(content)
 })

packages/compiler-sfc/src/script/importUsageCheck.ts

@@ -60,6 +60,9 @@ function resolveTemplateUsedIdentifiers(sfc: SFCDescriptor): Set<string> {
               extractIdentifiers(ids, prop.forParseResult!.source)
             } else if (prop.exp) {
               extractIdentifiers(ids, prop.exp)
+            } else if (prop.name === 'bind' && !prop.exp) {
+              // v-bind shorthand rawName as identifier
+              ids.add(prop.rawName!.slice(1))
             }
           }
           if (