perf(treesitter): reduce memory usage of _select.lua #40409

Problem:  The table `history` in treesitter/_select.lua stores references
          to previously selected TSNodes, but a TSNode needs to keep its
          whole TSTree alive in memory, which may be kept alive even
          after closing the buffer to which this history corresponds.

Solution: Store just the bits of information from the TSNode we need to
          go back in selection history (the range and ID), without
          referencing the TSNode itself.

runtime/lua/vim/treesitter/_select.lua

@@ -5,7 +5,7 @@ local Range = require('vim.treesitter._range')
 --- they get back to the child-node they were in instead of the parents first
 --- child-node.
 ---
---- @type {[integer]:vim.treesitter.select.node,[any]:any}
+--- @type {[integer]:{id:string,range:Range4},[any]:any}
 local history = {
   --- @type integer?
   bufnr = nil,
@@ -429,9 +429,13 @@ local function get_parent_from_range(range)
         changedtick = vim.b.changedtick,
       }
     end
-    table.insert(history, node)
-    history.current_node_id = node_id(parent)
 
+    table.insert(history, {
+      id = node_id(node),
+      range = node_range(node),
+    })
+
+    history.current_node_id = node_id(parent)
     return node_range(parent)
   end
 end
@@ -465,12 +469,12 @@ local function get_child_from_range(range)
     and history.changedtick == vim.b.changedtick
     and history.current_node_id == node_id(node)
   then
-    --- @type vim.treesitter.select.node
+    --- @type {id:string,range:Range4}
     local child = table.remove(history)
     if child then
-      history.current_node_id = node_id(child)
+      history.current_node_id = child.id
 
-      return node_range(child)
+      return child.range
     end
   end
   history = {}