fix: FileName::as_str to avoid enclosing virtual filenames in brackets

Author: greenhat

midenc-compile/src/stages/parse.rs

@@ -44,15 +44,15 @@ impl Stage for ParseStage {
                     input,
                     session,
                     &WasmTranslationConfig {
-                        source_name: name.to_string().into(),
+                        source_name: name.as_str().unwrap().to_string().into(),
                         ..Default::default()
                     },
                 ),
                 FileType::Wat => self.parse_hir_from_wat_bytes(
                     input,
                     session,
                     &WasmTranslationConfig {
-                        source_name: name.to_string().into(),
+                        source_name: name.as_str().unwrap().to_string().into(),
                         ..Default::default()
                     },
                 ),