fix(compiler-sfc): fix import usage check in template strings case sensitive

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

@@ -206,15 +206,15 @@ return { x }
 
 exports[`SFC compile <script setup> imports imports not used in <template> should not be exposed 1`] = `
 "import { defineComponent as _defineComponent } from 'vue'
-import { FooBar, FooBaz, FooQux, vMyDir, x, y, z, x$y, VAR, VAR2, VAR3, Last } from './x'
+import { FooBar, FooBaz, fooQux, vMyDir, x, y, z, x$y, VAR, VAR2, VAR3, Last } from './x'
 
 export default _defineComponent({
  setup(__props, { expose }) {
  expose()
 
  const fooBar: FooBar = 1
 
-return { fooBar, FooBaz, FooQux, vMyDir, x, z, x$y, VAR, VAR3, Last }
+return { fooBar, FooBaz, fooQux, vMyDir, x, z, x$y, VAR, VAR3, Last }
 }
 
 })"

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

@@ -213,7 +213,7 @@ defineExpose({ foo: 123 })
  test('imports not used in <template> should not be exposed', () => {
  const { content } = compile(`
  <script setup lang="ts">
- import { FooBar, FooBaz, FooQux, vMyDir, x, y, z, x$y, VAR, VAR2, VAR3, Last } from './x'
+ import { FooBar, FooBaz, fooQux, vMyDir, x, y, z, x$y, VAR, VAR2, VAR3, Last } from './x'
  const fooBar: FooBar = 1
  </script>
  <template>
@@ -233,7 +233,7 @@ defineExpose({ foo: 123 })
  // x$y: #4274 should escape special chars when creating Regex
  // VAR & VAR3: #4340 interpolations in tempalte strings
  expect(content).toMatch(
- `return { fooBar, FooBaz, FooQux, vMyDir, x, z, x$y, VAR, VAR3, Last }`
+ `return { fooBar, FooBaz, fooQux, vMyDir, x, z, x$y, VAR, VAR3, Last }`
  )
  assertCode(content)
  })

packages/compiler-sfc/src/compileScript.ts

@@ -2212,7 +2212,7 @@ function resolveTemplateUsageCheckString(sfc: SFCDescriptor) {
  !parserOptions.isNativeTag!(node.tag) &&
  !parserOptions.isBuiltInComponent!(node.tag)
  ) {
- code += `,${capitalize(camelize(node.tag))}`
+ code += `,${camelize(node.tag)}`
  }
  for (let i = 0; i < node.props.length; i++) {
  const prop = node.props[i]