Make :source_path in docs chunk a charlist (#14071)

Author: jonatanklosko

lib/elixir/src/elixir_erl.erl

@@ -526,7 +526,7 @@ docs_chunk(Map, Set, Module, Anno, Def, Defmacro, Types, Callbacks, ChunkOpts) -
       TypeDocs = get_type_docs(Set, Types),
 
       ModuleMeta = ModuleDocMeta#{
-        source_path => File,
+        source_path => elixir_utils:characters_to_list(File),
         source_annos => [Anno],
         behaviours => [Mod || {behaviour, Mod} <- Attributes]
       },

lib/elixir/test/elixir/kernel/docs_test.exs

@@ -255,7 +255,7 @@ defmodule Kernel.DocsTest do
 
       assert module_doc == "Module doc"
 
-      file = __ENV__.file
+      file = String.to_charlist(__ENV__.file)
 
       source_annos = [:erl_anno.new({line + 3, 19})]