refactor(config): fields are optional

this is how they should have been from the start

lua/yazi/types.lua

@@ -1,7 +1,7 @@
 ---@class YaziConfig
----@field public open_for_directories boolean
----@field public chosen_file_path string "the path to a temporary file that will be created by yazi to store the chosen file path"
----@field public events_file_path string "the path to a temporary file that will be created by yazi to store events"
+---@field public open_for_directories? boolean
+---@field public chosen_file_path? string "the path to a temporary file that will be created by yazi to store the chosen file path"
+---@field public events_file_path? string "the path to a temporary file that will be created by yazi to store events"
 
 ---@class YaziRenameEvent
 ---@field public type "rename"