Style search in buffer below breadcrumbs

We still have issues with project search styling.

Co-Authored-By: Antonio Scandurra <me@as-cii.com>
Co-Authored-By: Max Brunsfeld <maxbrunsfeld@gmail.com>

crates/theme/src/theme.rs

@@ -26,7 +26,7 @@ pub struct Theme {
     pub editor: Editor,
     pub search: Search,
     pub project_diagnostics: ProjectDiagnostics,
-    pub breadcrumbs: Breadcrumbs,
+    pub breadcrumbs: ContainedText,
 }
 
 #[derive(Deserialize, Default)]
@@ -123,6 +123,7 @@ pub struct Search {
 pub struct FindEditor {
     #[serde(flatten)]
     pub input: FieldEditor,
+    pub min_width: f32,
     pub max_width: f32,
 }
 
@@ -278,11 +279,6 @@ pub struct ProjectDiagnostics {
     pub tab_summary_spacing: f32,
 }
 
-#[derive(Clone, Deserialize, Default)]
-pub struct Breadcrumbs {
-    pub text: TextStyle,
-}
-
 #[derive(Clone, Deserialize, Default)]
 pub struct Editor {
     pub text_color: Color,