refactor(bar): enable dots by default and reduce size in single_bar

Author: RicardoRyn

src/plotfig/single_bar.py

@@ -476,8 +476,8 @@ def plot_one_group_violin_figure(
     gradient_color: bool = False,
     colors_start: list[str] | None = None,
     colors_end: list[str] | None = None,
-    show_dots: bool = False,
-    dots_size: Num = 35,
+    show_dots: bool = True,
+    dots_size: Num = 15,
     title_name: str = "",
     title_fontsize: Num = 12,
     title_pad: Num = 10,