Re-add absl package requirement

Re-add absl package requirement in CMakeLists.txt.

Author: dudantas

src/CMakeLists.txt

@@ -124,7 +124,6 @@ find_package(OpenSSL QUIET)
 find_package(PhysFS REQUIRED)
 find_package(ZLIB REQUIRED)
 find_package(phmap REQUIRED)
-find_package(absl CONFIG REQUIRED)
 find_package(Protobuf REQUIRED)
 find_package(LibLZMA REQUIRED)
 find_package(nlohmann_json REQUIRED)
@@ -138,10 +137,12 @@ if(WASM)
     target_compile_options(Threads::Threads INTERFACE -pthread)
     target_link_options(Threads::Threads INTERFACE -pthread)
     set(CMAKE_THREAD_LIBS_INIT "-pthread")
+    set(Threads_FOUND TRUE)
   endif()
 else()
   find_package(Threads REQUIRED)
 endif()
+find_package(absl CONFIG REQUIRED)
 find_package(STDUUID CONFIG REQUIRED)
 find_package(pugixml CONFIG REQUIRED)
 find_package(ZLIB REQUIRED)