Use project environment in LSP runnables context (#29761)

Release Notes:

- Fixed the tasks from LSP not inheriting the worktree environment

----

cc @SomeoneToIgnore

crates/project/src/project.rs

@@ -56,7 +56,7 @@ use futures::future::join_all;
 use futures::{
     StreamExt,
     channel::mpsc::{self, UnboundedReceiver},
-    future::try_join_all,
+    future::{Shared, try_join_all},
 };
 pub use image_store::{ImageItem, ImageStore};
 use image_store::{ImageItemEvent, ImageStoreEvent};
@@ -1605,6 +1605,17 @@ impl Project {
         self.environment.read(cx).get_cli_environment()
     }
 
+    pub fn buffer_environment<'a>(
+        &'a self,
+        buffer: &Entity<Buffer>,
+        worktree_store: &Entity<WorktreeStore>,
+        cx: &'a mut App,
+    ) -> Shared<Task<Option<HashMap<String, String>>>> {
+        self.environment.update(cx, |environment, cx| {
+            environment.get_buffer_environment(&buffer, &worktree_store, cx)
+        })
+    }
+
     pub fn shell_environment_errors<'a>(
         &'a self,
         cx: &'a App,