fix: make sure asset reference id could be a valid identifier (rolldown#2198)

<!-- Thank you for contributing! -->

### Description

<!-- Please insert your description here and provide especially info
about the "what" this PR is solving -->

close vitejs/rolldown-vite#27 (comment)

ref
https://github.com/rollup/rollup/blob/master/src/utils/FileEmitter.ts#L300

Author: underfin

crates/rolldown_common/src/file_emitter.rs

@@ -66,6 +66,8 @@ impl FileEmitter {
         })
         .as_bytes(),
     )
+    // The reference id can be used for import.meta.ROLLUP_FILE_URL_referenceId and therefore needs to be a valid identifier.
+    .replace('-', "$")
     .into()
   }