fix: drop unnecessary DefaultInfo in release_nostrip

The `release_nostrip_binary` rule would copy the `DefaultInfo` of the
executable (binary) being transitioned. This is not entirely correct and
creates issues in Bazel 8. Moreover, nothing but the resulting release
binary should be necessary, so we can resolve the issue by specifying
`executable` only.

Additionally, the transition function is renamed for consistency.

Author: nmattia

publish/defs.bzl

@@ -4,15 +4,15 @@ For example, you might want to build some targets with optimizations enabled
 no matter what the current Bazel flags are.
 """
 
-def _release_nostrip_transition(_settings, _attr):
+def _release_nostrip_transition_impl(_settings, _attr):
     return {
         "//command_line_option:compilation_mode": "opt",
         "//command_line_option:strip": "never",
         "@rules_rust//:extra_rustc_flags": ["-Cdebug-assertions=off"],
     }
 
 release_nostrip_transition = transition(
-    implementation = _release_nostrip_transition,
+    implementation = _release_nostrip_transition_impl,
     inputs = [],
     outputs = [
         "//command_line_option:compilation_mode",
@@ -22,14 +22,11 @@ release_nostrip_transition = transition(
 )
 
 def _release_nostrip_impl(ctx):
-    bin = ctx.attr.binary[0]
-    info = bin[DefaultInfo]
-
-    executable = ctx.actions.declare_file(ctx.label.name)
-    ctx.actions.symlink(output = executable, target_file = ctx.file.binary)
+    release_bin = ctx.actions.declare_file(ctx.label.name)
+    ctx.actions.symlink(output = release_bin, target_file = ctx.file.binary)
 
     return [
-        DefaultInfo(files = info.files, runfiles = info.default_runfiles, executable = executable),
+        DefaultInfo(executable = release_bin),
     ]
 
 release_nostrip_binary = rule(