Merge pull request #20907 from Homebrew/latest-formula-use-full-name

formula: use `full_name` in `latest_formula`

Author: Rylan12

Library/Homebrew/formula.rb

@@ -1759,7 +1759,7 @@ def new_formula_available?
 
   sig { returns(T.nilable(Formula)) }
   def current_installed_alias_target
-    Formulary.factory(T.must(installed_alias_name)) if installed_alias_path
+    Formulary.factory(T.must(full_installed_alias_name)) if installed_alias_path
   end
 
   # Has the target of the alias used to install this formula changed?
@@ -1787,7 +1787,7 @@ def alias_changed?
   # Otherwise, return self.
   sig { returns(Formula) }
   def latest_formula
-    installed_alias_target_changed? ? T.must(current_installed_alias_target) : Formulary.factory(name)
+    installed_alias_target_changed? ? T.must(current_installed_alias_target) : Formulary.factory(full_name)
   end
 
   sig { returns(T::Array[Formula]) }