Define design tokens for use in chart theme to enable CSS custom
properties to be used for dark mode
Replace deprecated colors for constant design tokens in charts

Chart design tokens and dark mode

See merge request !5004



Merged-by: Savas Vedova <svedova@gitlab.com>
Approved-by: Jeremy Elder <jelder@gitlab.com>
Approved-by: Dan MH <dmizzi-harris@gitlab.com>
Approved-by: Denys Mishunov <dmishunov@gitlab.com>
Approved-by: Savas Vedova <svedova@gitlab.com>
Reviewed-by: Savas Vedova <svedova@gitlab.com>
Reviewed-by: Scott de Jonge <sdejonge@gitlab.com>
Co-authored-by: sdejonge <sdejonge@gitlab.com>

# [111.1.0](v111.0.0...v111.1.0) (2025-03-13)

### Features

* **DesignTokens:** define chart contextual design tokens ([57eafc43](57eafc43))