Start removing callers of legacy excerpt APIs (#50144)

Paving the way to remove `ExcerptId`. Done in this PR:

- Unshipped the stack trace view
- Get rid of `push_excerpts`
- Get rid of some callers of `remove_excerpts`

We still need to remove some calls to `remove_excerpts` and other APIs,
especially in `randomly_edit_excerpts` and collaboration.

Release Notes:

- The stack trace multibuffer view has been removed.

---------

Co-authored-by: Conrad Irwin <conrad.irwin@gmail.com>

crates/multi_buffer/src/multi_buffer.rs

@@ -1160,12 +1160,11 @@ impl MultiBuffer {
             },
         );
         this.singleton = true;
-        let buffer_id = buffer.read(cx).remote_id();
-        this.push_excerpts(
-            buffer,
-            [ExcerptRange::new(text::Anchor::min_max_range_for_buffer(
-                buffer_id,
-            ))],
+        this.set_excerpts_for_path(
+            PathKey::sorted(0),
+            buffer.clone(),
+            [Point::zero()..buffer.read(cx).max_point()],
+            0,
             cx,
         );
         this
@@ -1734,18 +1733,6 @@ impl MultiBuffer {
         }
     }
 
-    pub fn push_excerpts<O>(
-        &mut self,
-        buffer: Entity<Buffer>,
-        ranges: impl IntoIterator<Item = ExcerptRange<O>>,
-        cx: &mut Context<Self>,
-    ) -> Vec<ExcerptId>
-    where
-        O: text::ToOffset,
-    {
-        self.insert_excerpts_after(ExcerptId::max(), buffer, ranges, cx)
-    }
-
     #[instrument(skip_all)]
     fn merge_excerpt_ranges<'a>(
         expanded_ranges: impl IntoIterator<Item = &'a ExcerptRange<Point>> + 'a,
@@ -3749,11 +3736,21 @@ impl MultiBuffer {
         cx: &mut gpui::App,
     ) -> Entity<Self> {
         let multi = cx.new(|_| Self::new(Capability::ReadWrite));
-        for (text, ranges) in excerpts {
+        for (ix, (text, ranges)) in excerpts.into_iter().enumerate() {
             let buffer = cx.new(|cx| Buffer::local(text, cx));
-            let excerpt_ranges = ranges.into_iter().map(ExcerptRange::new);
+            let snapshot = buffer.read(cx).snapshot();
+            let excerpt_ranges = ranges
+                .into_iter()
+                .map(ExcerptRange::new)
+                .collect::<Vec<_>>();
             multi.update(cx, |multi, cx| {
-                multi.push_excerpts(buffer, excerpt_ranges, cx)
+                multi.set_excerpt_ranges_for_path(
+                    PathKey::sorted(ix as u64),
+                    buffer,
+                    &snapshot,
+                    excerpt_ranges,
+                    cx,
+                )
             });
         }
 
@@ -3887,7 +3884,8 @@ impl MultiBuffer {
                         .collect::<Vec<_>>()
                 );
 
-                let excerpt_id = self.push_excerpts(buffer_handle.clone(), ranges, cx);
+                let excerpt_id =
+                    self.insert_excerpts_after(ExcerptId::max(), buffer_handle, ranges, cx);
                 log::info!("Inserted with ids: {:?}", excerpt_id);
             } else {
                 let remove_count = rng.random_range(1..=excerpt_ids.len());