feat: add check for unsupported SHARED_HEAP + FAST_JIT configuration and update documentation warning

Author: lum1n0us

build-scripts/unsupported_combination.cmake

@@ -72,3 +72,7 @@ if(WAMR_BUILD_SIMD EQUAL 1)
   check_classic_interp_error("Unsupported build configuration: SIMD + CLASSIC_INTERP")
   check_fast_jit_error("Unsupported build configuration: SIMD + FAST_JIT")
 endif()
+
+if(WAMR_BUILD_SHARED_HEAP EQUAL 1)
+  check_fast_jit_error("Unsupported build configuration: SHARED_HEAP + FAST_JIT")
+endif()

doc/build_wamr.md

@@ -476,6 +476,9 @@ cmake -DWAMR_BUILD_PLATFORM=linux -DWAMR_BUILD_TARGET=ARM
 >    void shared_heap_free(void *ptr);
 > ```
 
+> [!WARNING]
+> Currently, the shared-heap feature is not supported in fast-jit mode.
+
 ### **Shrunk the memory usage**
 
 - **WAMR_BUILD_SHRUNK_MEMORY**=1/0, default to enable if not set