test(web): the title input that proves a bidi character is dropped, not replaced

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

internal/web/uploads_badinput_handler_test.go

@@ -1,10 +1,8 @@
 package web_test
 
 import (
-	"bytes"
 	"context"
 	"fmt"
-	"io"
 	"log/slog"
 	"net/http"
 	"testing"
@@ -72,7 +70,7 @@ func TestUploadPost_EveryBidirectionalControlCharacterIsStrippedFromATitle(t *te
 		t.Run(fmt.Sprintf("U+%04X", c), func(t *testing.T) {
 			app, sub := newUploadApp(t, audioOK, 200<<20)
 
-			rec := do(t, app, uploadReq(t, "Sprint "+string(c)+"review", "a.m4a", []byte("x")))
+			rec := do(t, app, uploadReq(t, "Sprint"+string(c)+"review", "a.m4a", []byte("x")))
 
 			require.Equal(t, http.StatusSeeOther, rec.Code)
 			var title string