sync default config / env with default behaviour without any configuration (#9676)

related PRs and issues
- supersedes https://github.com/nushell/nushell/pull/9633
- should close https://github.com/nushell/nushell/issues/9630

# Description
this PR updates the `default_config.nu` config file and the `config.rs`
module in `nu_protocol` so that the default behaviour of Nushell,
without any config, and the one with `default_config.nu` and
`default_env.nu` are the same.

## changelog
- 3e2bfc9bb: copy the structure of `default_config.nu` inside the
implementation of `Default` in the `config.rs` module for easier check
of the default values
- e25e5ccd6: sync all the *simple* config fields, i.e. the
non-structured ones
- ae7e8111c: set the `display_output` hook to always run `table`
- a09a1c564: leave only the default menus => i've removed
`commands_menu`, `vars_menu` and `commands_with_description`

## todo
- [x] ~~check the defaults in `$env.config.explore`~~ done in 173bdbba5
and b9622084c
- [x] ~~check the defaults in `$env.config.color_config`~~ done in
c411d781d => the theme is now `{}` by default so that it's the same as
the default one with `--no-config`
- [x] ~~check the defaults `$env.config.keybindings`~~ done in 715a69797
- already available with the selected mode: `completion_previous`,
`next_page`, `undo_or_previous_page`, `yank`, `unix-line-discard` and
`kill-line`, e.g. in *vi* mode, `unlix-line-discard` is done in NORMAL
mode with either `d0` from the end of the line or `dd` from anywhere in
the line and `kill-line` is done in NORMAL mode with `shift + d`. these
bindings are available by default in *emacs* mode as well.
- previously with removed custom menus: `commands_menu`, `vars_menu` and
`commands_with_description`
- [x] ~~check `$env.config.datetime_format`~~ done in 0ced6b8ec => as
there is no *human* format for datetimes, i've commented out both
`$env.config.datetime_format` fields
- [x] ~~fix `default_env.nu`~~ done in 67c215011

# User-Facing Changes
this should not change anything, just make sure the default behaviour of
Nushell and the `default_config.nu` are in sync.

# Tests + Formatting
# After Submitting

crates/nu-protocol/src/config.rs

@@ -113,47 +113,61 @@ pub struct Config {
 impl Default for Config {
     fn default() -> Config {
         Config {
-            filesize_metric: false,
-            table_mode: "rounded".into(),
-            table_show_empty: true,
-            external_completer: None,
+            show_banner: true,
+
             use_ls_colors: true,
-            color_config: HashMap::new(),
-            use_grid_icons: false,
-            footer_mode: FooterMode::RowCount(25),
-            float_precision: 4,
-            max_external_completion_results: 100,
-            filesize_format: "auto".into(),
-            use_ansi_coloring: true,
+            show_clickable_links_in_ls: true,
+
+            rm_always_trash: false,
+
+            cd_with_abbreviations: false,
+
+            table_mode: "rounded".into(),
+            table_index_mode: TableIndexMode::Always,
+            table_show_empty: true,
+            trim_strategy: TRIM_STRATEGY_DEFAULT,
+
+            datetime_normal_format: None,
+            datetime_table_format: None,
+
+            explore: HashMap::new(),
+
+            max_history_size: 100_000,
+            sync_history_on_enter: true,
+            history_file_format: HistoryFileFormat::PlainText,
+            history_isolation: true,
+
+            case_sensitive_completions: false,
             quick_completions: true,
             partial_completions: true,
             completion_algorithm: "prefix".into(),
-            edit_mode: "emacs".into(),
-            max_history_size: i64::MAX,
-            sync_history_on_enter: true,
-            history_file_format: HistoryFileFormat::PlainText,
-            history_isolation: false,
-            keybindings: Vec::new(),
-            menus: Vec::new(),
-            hooks: Hooks::new(),
-            rm_always_trash: false,
-            shell_integration: false,
-            buffer_editor: String::new(),
-            table_index_mode: TableIndexMode::Always,
-            cd_with_abbreviations: false,
-            case_sensitive_completions: false,
             enable_external_completion: true,
-            trim_strategy: TRIM_STRATEGY_DEFAULT,
-            show_banner: true,
-            bracketed_paste: true,
-            show_clickable_links_in_ls: true,
-            render_right_prompt_on_last_line: false,
-            explore: HashMap::new(),
+            max_external_completion_results: 100,
+            external_completer: None,
+
+            filesize_metric: false,
+            filesize_format: "auto".into(),
+
+            cursor_shape_emacs: NuCursorShape::Line,
             cursor_shape_vi_insert: NuCursorShape::Block,
             cursor_shape_vi_normal: NuCursorShape::UnderScore,
-            cursor_shape_emacs: NuCursorShape::Line,
-            datetime_normal_format: None,
-            datetime_table_format: None,
+
+            color_config: HashMap::new(),
+            use_grid_icons: true,
+            footer_mode: FooterMode::RowCount(25),
+            float_precision: 2,
+            buffer_editor: String::new(),
+            use_ansi_coloring: true,
+            bracketed_paste: true,
+            edit_mode: "emacs".into(),
+            shell_integration: false,
+            render_right_prompt_on_last_line: false,
+
+            hooks: Hooks::new(),
+
+            menus: Vec::new(),
+
+            keybindings: Vec::new(),
         }
     }
 }