Pass Summary::Context to Item::summarize (#18510)

We are going to use this in the multi-buffer to produce a summary for an
`Excerpt` that contains a `Range<Anchor>`.

Release Notes:

- N/A

Co-authored-by: Nathan <nathan@zed.dev>

crates/editor/src/display_map/block_map.rs

@@ -1360,7 +1360,7 @@ impl<'a> Iterator for BlockBufferRows<'a> {
 impl sum_tree::Item for Transform {
     type Summary = TransformSummary;
 
-    fn summary(&self) -> Self::Summary {
+    fn summary(&self, _cx: &()) -> Self::Summary {
         self.summary.clone()
     }
 }

crates/editor/src/display_map/crease_map.rs

@@ -291,7 +291,7 @@ impl sum_tree::Summary for ItemSummary {
 impl sum_tree::Item for CreaseItem {
     type Summary = ItemSummary;
 
-    fn summary(&self) -> Self::Summary {
+    fn summary(&self, _cx: &MultiBufferSnapshot) -> Self::Summary {
         ItemSummary {
             range: self.crease.range.clone(),
         }

crates/editor/src/display_map/fold_map.rs

@@ -944,7 +944,7 @@ struct TransformSummary {
 impl sum_tree::Item for Transform {
     type Summary = TransformSummary;
 
-    fn summary(&self) -> Self::Summary {
+    fn summary(&self, _cx: &()) -> Self::Summary {
         self.summary.clone()
     }
 }
@@ -1004,7 +1004,7 @@ impl Default for FoldRange {
 impl sum_tree::Item for Fold {
     type Summary = FoldSummary;
 
-    fn summary(&self) -> Self::Summary {
+    fn summary(&self, _cx: &MultiBufferSnapshot) -> Self::Summary {
         FoldSummary {
             start: self.range.start,
             end: self.range.end,

crates/editor/src/display_map/inlay_map.rs

@@ -74,7 +74,7 @@ impl Inlay {
 impl sum_tree::Item for Transform {
     type Summary = TransformSummary;
 
-    fn summary(&self) -> Self::Summary {
+    fn summary(&self, _cx: &()) -> Self::Summary {
         match self {
             Transform::Isomorphic(summary) => TransformSummary {
                 input: summary.clone(),

crates/editor/src/display_map/wrap_map.rs

@@ -917,7 +917,7 @@ impl Transform {
 impl sum_tree::Item for Transform {
     type Summary = TransformSummary;
 
-    fn summary(&self) -> Self::Summary {
+    fn summary(&self, _cx: &()) -> Self::Summary {
         self.summary.clone()
     }
 }