Repeat last motion doesn't apply to "next function"

[heliostatic]

Related to #1954, A-. doesn't repeat Goto next function (and possibly others).

It seems like perhaps the A-. keymap doesn't actually work for #1954 although the command palette does work as expected.

[heliostatic]

Repeat last command also doesn't appear to apply to view commands in the z menu:

        },
        "z" => { "View"
            "z" | "c" => align_view_center,
            "t" => align_view_top,
            "b" => align_view_bottom,
            "m" => align_view_middle,
            "k" | "up" => scroll_up,
            "j" | "down" => scroll_down,
            "C-b" | "pageup" => page_up,
            "C-f" | "pagedown" => page_down,
            "C-u" => half_page_up,
            "C-d" => half_page_down,
        },

[heliostatic]

Seems like the issue is basically that for select_textobject (https://github.com/helix-editor/helix/blob/master/helix-term/src/commands.rs#L4013), the last_motion gets set:
cx.editor.last_motion = Some(Motion(Box::new(textobject)));
(https://github.com/helix-editor/helix/blob/master/helix-term/src/commands.rs#L4060)

But for goto_ts_object_impl (https://github.com/helix-editor/helix/blob/master/helix-term/src/commands.rs#L3951) it does not, hence, not repeatable.

Looking through this file, it's probably worth a larger refactoring of move and select commands to make sure they're always repeatable, undoable, etc.