feat: set beam_blick as the default cursor shape if we have mutil cursor support

src/keybind/builtin/flow.json

@@ -225,6 +225,7 @@
     "select": {
         "name": "SELECT",
         "inherit": "normal",
+        "cursor": "block",
         "press": [
             ["left", "select_left"],
             ["right", "select_right"],

src/tui/tui.zig

@@ -1455,7 +1455,8 @@ fn set_terminal_style(self: *Self) void {
 
 pub fn get_cursor_shape() renderer.CursorShape {
     const self = current();
-    const shape = if (self.input_mode_) |mode| mode.cursor_shape orelse self.default_cursor else self.default_cursor;
+    const shape_ = if (self.input_mode_) |mode| mode.cursor_shape orelse self.default_cursor else self.default_cursor;
+    const shape = if (self.rdr_.vx.caps.multi_cursor and shape_ == .default) .beam_blink else shape_;
     return switch (shape) {
         .default => .default,
         .block_blink => .block_blink,