chore: Fix several style lints (#17488)

It's not comprehensive enough to start linting on `style` group, but
hey, it's a start.

Release Notes:

- N/A

crates/project/src/environment.rs

@@ -29,11 +29,10 @@ impl ProjectEnvironment {
         cx: &mut AppContext,
     ) -> Model<Self> {
         cx.new_model(|cx| {
-            cx.subscribe(worktree_store, |this: &mut Self, _, event, _| match event {
-                WorktreeStoreEvent::WorktreeRemoved(_, id) => {
+            cx.subscribe(worktree_store, |this: &mut Self, _, event, _| {
+                if let WorktreeStoreEvent::WorktreeRemoved(_, id) = event {
                     this.remove_worktree_environment(*id);
                 }
-                _ => {}
             })
             .detach();
 
@@ -160,9 +159,9 @@ enum EnvironmentOrigin {
     WorktreeShell,
 }
 
-impl Into<String> for EnvironmentOrigin {
-    fn into(self) -> String {
-        match self {
+impl From<EnvironmentOrigin> for String {
+    fn from(val: EnvironmentOrigin) -> Self {
+        match val {
             EnvironmentOrigin::Cli => "cli".into(),
             EnvironmentOrigin::WorktreeShell => "worktree-shell".into(),
         }