fix(wasm): scanProject being stuck (#7281)

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>
Co-authored-by: Naoki Ikeguchi <me@s6n.jp>

Author: 3 people

.changeset/clean-coins-hide.md

@@ -0,0 +1,8 @@
+---
+"@biomejs/biome": patch
+"@biomejs/wasm-bundler": patch
+"@biomejs/wasm-nodejs": patch
+"@biomejs/wasm-web": patch
+---
+
+Fixed an issue where the function `scanProject` wouldn't work as expected.

crates/biome_service/src/scanner.rs

@@ -404,7 +404,10 @@ impl Scanner {
                 ..
             } = self.scan_folder(folder, &ctx);
 
+            // Close the diagnostics channel before collecting to avoid a deadlock on WASM.
+            drop(ctx);
             let diagnostics = collector.run(diagnostics_receiver);
+
             (duration, diagnostics, configuration_files)
         };