enable WAMR_BUILD_MULTI_MODULE to apply all wasm-vm unit tests (#4745)

Signed-off-by: zhenweijin <zhenwei.jin@intel.com>

tests/unit/wasm-vm/CMakeLists.txt

@@ -12,6 +12,7 @@ set(WAMR_BUILD_FAST_INTERP 0)
 set(WAMR_BUILD_INTERP 1)
 set(WAMR_BUILD_JIT 0)
 set(WAMR_BUILD_LIBC_BUILTIN 1)
+set(WAMR_BUILD_MULTI_MODULE 1)
 
 add_definitions (-Dattr_container_malloc=malloc)
 add_definitions (-Dattr_container_free=free)