fix: use correct theme key for link color

link.foreground returns black in some themes, use 'link' key instead which has the correct blue color

Author: aseemxs

plugins/amazonq/chat/jetbrains-community/src/software/aws/toolkits/jetbrains/services/amazonq/webview/theme/EditorThemeAdapter.kt

@@ -85,13 +85,15 @@ class EditorThemeAdapter {
                 darkDefault = 0x3C3F41,
             )
 
+            val linkColor = themeColor("link", "Link.activeForeground", default = 0x589DF6)
+            
             return AmazonQTheme(
                 darkMode = !JBColor.isBright(),
                 font = UIUtil.getFont(UIUtil.FontSize.NORMAL, null),
 
                 defaultText = text,
                 inactiveText = themeColor("TextField.inactiveForeground", default = 0x8C8C8C, darkDefault = 0x808080),
-                linkText = themeColor("link.foreground", "link", "Link.activeForeground", default = 0x589DF6),
+                linkText = linkColor,
 
                 background = chatBackground,
                 border = getBorderColor(currentScheme),