windows: use ProcessPrng from bcryptprimitives.dll

rather than SystemFunction036 from advapi32. This has the advantage that
the code is loaded preemptively, preventing random numbers from
failing when they are needed for the first time on a system under heavy
load.

test/standalone/issue_5825/build.zig

@@ -32,7 +32,6 @@ pub fn build(b: *std.Build) void {
         }),
     });
     exe.subsystem = .console;
-    exe.root_module.linkSystemLibrary("advapi32", .{}); // for RtlGenRandom
     exe.root_module.linkSystemLibrary("kernel32", .{});
     exe.root_module.linkSystemLibrary("ntdll", .{});
     exe.root_module.addObject(obj);

test/standalone/test_obj_link_run/build.zig

@@ -12,7 +12,6 @@ pub fn build(b: *std.Build) void {
         test_obj.root_module.linkSystemLibrary("ntdll", .{});
         test_obj.root_module.linkSystemLibrary("kernel32", .{});
         test_obj.root_module.linkSystemLibrary("ws2_32", .{});
-        test_obj.root_module.linkSystemLibrary("advapi32", .{}); // for RtlGenRandom
     }
 
     const test_exe_mod = b.createModule(.{

test/standalone/windows_argv/build.zig

@@ -86,7 +86,6 @@ pub fn build(b: *std.Build) !void {
                 .optimize = optimize,
             }),
         });
-        lib_msvc.root_module.linkSystemLibrary("advapi32", .{}); // for RtlGenRandom
         const verify_msvc = b.addExecutable(.{
             .name = "verify-msvc",
             .root_module = b.createModule(.{