[Bug] 为什么我无论如何调整我的theme配色，依然无法去除这个输入框的黑边

我的系统配置：

我的theme配置

`
patch:
config_version: "2026-08-06.4"

style:
color_scheme: mac_light_1071
color_scheme_dark: mac_light_1071

# Squirrel 1.x: false 会把拼音行放进候选窗，面板会明显变高。
inline_preedit: true
inline_candidate: false

preset_color_schemes:
mac_light_1071:
name: "mac_light_1071"
author: "Based on rime/squirrel issue #1071"

  candidate_list_layout: linear
  text_orientation: horizontal
  candidate_format: "[label] [candidate] [comment]"

  font_face: "PingFang SC"
  font_point: 18
  label_font_face: "Helvetica"
  label_font_point: 12
  comment_font_face: "Helvetica"
  comment_font_point: 14
  base_offset: 0

  inline_preedit: true
  inline_candidate: false
  memorize_size: true
  show_paging: false
  mutual_exclusive: false
  translucency: true

  border_height: 0
  border_width: 0
  corner_radius: 5
  hilited_corner_radius: 0
  line_spacing: 4
  spacing: 6
  shadow_size: 0
  surrounding_extra_expansion: 0
  alpha: 1
  color_space: display_p3

  back_color: 0xFFFFFFFF
  border_color: 0xFFD2D2D2
  candidate_back_color: 0xFFFFFFFF
  candidate_text_color: 0xFF333333
  label_color: 0xFF666666
  comment_text_color: 0xFF5C5C5C
  text_color: 0xFF333333

  hilited_candidate_back_color: 0x1AFB5E31
  hilited_candidate_text_color: 0xFFE66F32
  hilited_candidate_label_color: 0xFFE66F32
  hilited_comment_text_color: 0xFFE66F32
  hilited_back_color: 0x1AFB5E31
  hilited_text_color: 0x2759CEFF

`

No source file, test, or entry point is named. Start by reproducing the black input-box border with the supplied theme configuration on macOS, then trace how the theme renders the input box border. Done means the border follows the configured colors and dimensions, including the requested border removal.