Disable dark theme in until chat history has dark theme support (#4864)

* Disable dark theme

* Disable dark theme

* Revert

* Add PR number

Author: compulim

CHANGELOG.md

@@ -22,6 +22,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+### Fixed
+
+-  Fixes [#4863](https://github.com/microsoft/BotFramework-WebChat/issues/4863). Disable dark theme for link references until chat history has dark theme support, by [@compulim](https://github.com/compulim), in PR [#4864](https://github.com/microsoft/BotFramework-WebChat/pull/4864)
+
 ### Added
 
 -  Resolves [#4853](https://github.com/microsoft/BotFramework-WebChat/issues/4853). Shorten URLs in link definitions UI, by [@compulim](https://github.com/compulim), in PR [#4860](https://github.com/microsoft/BotFramework-WebChat/pull/4860)

packages/component/src/Styles/StyleSet/LinkDefinitions.ts

@@ -1,9 +1,8 @@
-import {
-  DARK_THEME_SELECTOR,
-  FORCED_COLORS_SELECTOR,
-  LIGHT_THEME_SELECTOR,
-  NOT_FORCED_COLORS_SELECTOR
-} from './Constants';
+import { FORCED_COLORS_SELECTOR, NOT_FORCED_COLORS_SELECTOR } from './Constants';
+
+// TODO: Temporarily disable dark theme until chat history support dark theme.
+const DARK_THEME_SELECTOR = '@media (forced-colors: none) and not (forced-colors: none)'; // Always return false
+const LIGHT_THEME_SELECTOR = '@media (forced-colors: none)';
 
 import CSSTokens from '../CSSTokens';
 

packages/component/src/Styles/StyleSet/ModalDialog.ts

@@ -1,9 +1,8 @@
-import {
-  DARK_THEME_SELECTOR,
-  FORCED_COLORS_SELECTOR,
-  LIGHT_THEME_SELECTOR,
-  NOT_FORCED_COLORS_SELECTOR
-} from './Constants';
+import { FORCED_COLORS_SELECTOR, NOT_FORCED_COLORS_SELECTOR } from './Constants';
+
+// TODO: Temporarily disable dark theme until we defined the link color and stuff for Markdown.
+const DARK_THEME_SELECTOR = '@media (forced-colors: none) and not (forced-colors: none)'; // Always return false
+const LIGHT_THEME_SELECTOR = '@media (forced-colors: none)';
 
 import CSSTokens from '../CSSTokens';