fix: EnumSet initFull/Empty are deprecated

[iisakkirotko]

Replaces the recently deprecated EnumSet.initFull and EnumSet.initEmpty with their new declaration literal counterparts.

Fixes #3169.

[dotcarmen]

fyi - these changes are usually accompanied by an update to minimum_zig_version in build.zig.zon. i don't know if you have an earlier build, but here's a patch anyways

diff --git a/build.zig.zon b/build.zig.zon
index afba9ebe32..73c7069cc3 100644
--- a/build.zig.zon
+++ b/build.zig.zon
@@ -10,7 +10,7 @@
     // nix flake update --commit-lock-file
     // ```
     // If you do not use Nix, a ZLS maintainer can take care of this.
-    .minimum_zig_version = "0.16.0-dev.2984+cb7d2b056",
+    .minimum_zig_version = "v0.16.0-dev.3133+5ec8e45f3",
     // Must be kept in sync with the `deps.nix` for the Nix flake.
     // If you do not use Nix, a ZLS maintainer can take care of this.
     .dependencies = .{