fix(core): use black for all fg elements when in light theme (#32415)

## Current Behavior
We use dark gray for a secondary fg color, but when dimmed and in
certain terminals its not easy to read for light mode

## Expected Behavior
We've struggled with getting this pallet right for a while, while we
continue working on it we'll just set it to all black

## Related Issue(s)
<!-- Please link the issue being fixed so it gets closed when this is
merged. -->

Fixes #

(cherry picked from commit 885a3d5)

Author: AgentEnder

packages/nx/src/native/tui/theme.rs

@@ -2,7 +2,7 @@
 #![allow(clippy::disallowed_types)]
 
 // This is the only file we should use the `ratatui::style::Color` type in
-use ratatui::style::Color;
+use ratatui::style::{Color, Style};
 use std::sync::LazyLock;
 use terminal_colorsaurus::{ColorScheme, QueryOptions, color_scheme};
 use tracing::debug;
@@ -36,7 +36,8 @@ impl Theme {
     fn dark() -> Self {
         Self {
             is_dark_mode: true,
-            primary_fg: Color::White,
+            // reset => default foreground color
+            primary_fg: Color::Reset,
             secondary_fg: Color::Gray,
             error: Color::Red,
             success: Color::Green,
@@ -49,7 +50,8 @@ impl Theme {
     fn light() -> Self {
         Self {
             is_dark_mode: false,
-            primary_fg: Color::Black,
+            // reset => default foreground color
+            primary_fg: Color::Reset,
             secondary_fg: Color::DarkGray,
             error: Color::Red,
             success: Color::Green,