Use jl_dlsym with search_deps=1 for ccalls

Reverts the behaviour change for ccalls introduced by JuliaLang#58815.  This is motivated
by libraries like MPI, where the dynamic library that actually defines a symbol
is difficult to predict:
JuliaParallel/MPI.jl#915 (comment)

Author: xal-0

src/jitlayers.cpp

@@ -1748,7 +1748,7 @@ struct JuliaOJIT::DLSymOptimizer {
 
     void *lookup_symbol(void *libhandle, const char *fname) JL_NOTSAFEPOINT {
         void *addr;
-        jl_dlsym(libhandle, fname, &addr, 0, 0);
+        jl_dlsym(libhandle, fname, &addr, 0, 1);
         return addr;
     }
 

src/runtime_ccall.cpp

@@ -59,7 +59,7 @@ void *jl_load_and_lookup(const char *f_lib, const char *f_name, _Atomic(void*) *
     if (!handle)
         jl_atomic_store_release(hnd, (handle = jl_get_library(f_lib)));
     void * ptr;
-    jl_dlsym(handle, f_name, &ptr, 1, 0);
+    jl_dlsym(handle, f_name, &ptr, 1, 1);
     return ptr;
 }
 
@@ -80,7 +80,7 @@ void *jl_lazy_load_and_lookup(jl_value_t *lib_val, const char *f_name)
     } else
         jl_type_error("ccall", (jl_value_t*)jl_symbol_type, lib_val);
     void *ptr;
-    jl_dlsym(lib_ptr, f_name, &ptr, 1, 0);
+    jl_dlsym(lib_ptr, f_name, &ptr, 1, 1);
     return ptr;
 }