Use buffer font when rendering editor breadcrumbs and diagnostics (#10488)

Before:

<img width="592" alt="Screenshot 2024-04-12 at 12 00 00 PM"
src="https://github.com/zed-industries/zed/assets/2280405/3251743e-4f2c-4ca3-9bc5-88f37660f7b9">

After:

<img width="673" alt="Screenshot 2024-04-12 at 12 11 37 PM"
src="https://github.com/zed-industries/zed/assets/2280405/6a8ac597-261a-45d9-bf2a-a673b6f26b0e">


Release Notes:

- N/A

crates/editor/src/editor.rs

@@ -10593,6 +10593,11 @@ pub fn diagnostic_block_renderer(diagnostic: Diagnostic, _is_valid: bool) -> Ren
 
         let mut text_style = cx.text_style().clone();
         text_style.color = diagnostic_style(diagnostic.severity, true, cx.theme().status());
+        let theme_settings = ThemeSettings::get_global(cx);
+        text_style.font_family = theme_settings.buffer_font.family.clone();
+        text_style.font_style = theme_settings.buffer_font.style;
+        text_style.font_features = theme_settings.buffer_font.features;
+        text_style.font_weight = theme_settings.buffer_font.weight;
 
         let multi_line_diagnostic = diagnostic.message.contains('\n');
 

crates/editor/src/items.rs

@@ -30,7 +30,7 @@ use std::{
     sync::Arc,
 };
 use text::{BufferId, Selection};
-use theme::Theme;
+use theme::{Theme, ThemeSettings};
 use ui::{h_flex, prelude::*, Label};
 use util::{paths::PathExt, ResultExt, TryFutureExt};
 use workspace::item::{BreadcrumbText, FollowEvent, FollowableItemHandle};
@@ -827,13 +827,18 @@ impl Item for Editor {
             .map(|path| path.to_string_lossy().to_string())
             .unwrap_or_else(|| "untitled".to_string());
 
+        let settings = ThemeSettings::get_global(cx);
+
         let mut breadcrumbs = vec![BreadcrumbText {
             text: filename,
             highlights: None,
+            font: Some(settings.buffer_font.clone()),
         }];
+
         breadcrumbs.extend(symbols.into_iter().map(|symbol| BreadcrumbText {
             text: symbol.text,
             highlights: Some(symbol.highlight_ranges),
+            font: Some(settings.buffer_font.clone()),
         }));
         Some(breadcrumbs)
     }