Project search bar layout improvements (#7963)

The PR matches project search layout with the recent changes in the
buffer project layout.

https://github.com/zed-industries/zed/assets/2101250/91b905ea-aed8-4740-9e60-67f3052885e2


Release Notes:

- Improve project search bar layout, match it with the buffer search bar ([7722](https://github.com/zed-industries/zed/issues/7722))

crates/search/src/buffer_search.rs

@@ -38,7 +38,7 @@ pub use registrar::DivRegistrar;
 use registrar::{ForDeployed, ForDismissed, SearchActionsRegistrar, WithResults};
 
 const MIN_INPUT_WIDTH_REMS: f32 = 15.;
-const MAX_INPUT_WIDTH_REMS: f32 = 25.;
+const MAX_INPUT_WIDTH_REMS: f32 = 30.;
 
 #[derive(PartialEq, Clone, Deserialize)]
 pub struct Deploy {
@@ -217,7 +217,6 @@ impl Render for BufferSearchBar {
                     .flex_1()
                     .px_2()
                     .py_1()
-                    .gap_2()
                     .border_1()
                     .border_color(editor_border)
                     .min_w(rems(MIN_INPUT_WIDTH_REMS))