Fix some misc issues

Author: syntaxerror247

src/ui_widgets/ContextPopup.gd

@@ -54,6 +54,7 @@ static func create_button(text: String, press_callback: Callable, disabled := fa
 	var main_button := Button.new()
 	main_button.theme_type_variation = "ContextButton"
 	main_button.focus_mode = Control.FOCUS_NONE
+	main_button.mouse_filter = Control.MouseFilter.MOUSE_FILTER_PASS
 	if disabled:
 		main_button.disabled = true
 	else:

src/ui_widgets/PanelGrid.gd

@@ -19,6 +19,7 @@ var copy_button: Button
 
 func _ready() -> void:
 	mouse_exited.connect(remove_copy_button)
+	mouse_filter = MOUSE_FILTER_IGNORE
 
 func _draw() -> void:
 	boxes.clear()

src/utils/ThemeUtils.gd

@@ -191,6 +191,8 @@ static func recalculate_colors() -> void:
 
 	flat_button_color_disabled = base_color.lerp(max_contrast_color, 0.08)
 	translucent_button_color_disabled = base_color.lerp(max_contrast_color, 0.1)
+	context_button_color_disabled = Color(Color.BLACK, maxf(0.16, 0.48 - color_difference(Color.BLACK, basic_panel_inner_color) * 2)) if is_theme_dark\
+			else Color(Color.BLACK, 0.055)
 
 	connected_button_inner_color_hover = line_edit_inner_color.blend(hover_overlay_color)
 	connected_button_border_color_hover = line_edit_normal_border_color.blend(strong_hover_overlay_color)