[TDC-47] 로그인 없어도 조회 가능할 수 있도록

threedollar-application/src/main/java/com/threedollar/controller/sticker/StickerController.java

@@ -29,15 +29,14 @@ public class StickerController {
     public ApiResponse<String> createReaction(@Valid @RequestBody AddReactionRequest request,
                                               @PathVariable StickerGroup stickerGroup) {
         stickerFacadeService.upsertSticker(request, stickerGroup);
-
         return ApiResponse.OK;
     }
 
     @Operation(summary = "[스티커] 타겟들에 대한 스티커들을 조회합니다")
     @GetMapping("/v1/sticker-group/{stickerGroup}/stickers")
     public ApiResponse<List<TargetStickerAction>> getTargetStickerReactions(@PathVariable StickerGroup stickerGroup,
                                                                             @RequestParam Set<String> targetIds,
-                                                                            @RequestParam String accountId) {
+                                                                            @RequestParam(required = false) String accountId) {
         return ApiResponse.success(stickerFacadeService.getTargetStickerReactionResponse(stickerGroup, accountId, targetIds));
     }