chore: pass callback to view.parse

## Details

Missed the last thing we need to have in place to do async parsing, the
ability to trigger a `callback` where we call `parser:parse()`.

Added a `debug` statement when we skip parsing due to missing context.

Author: MeanderingProgrammer

lua/render-markdown/core/ui.lua

@@ -167,10 +167,12 @@ function Updater:parse(callback)
         local context = Context.new(self.buf, self.win, self.config, self.mode)
         if context then
             -- make sure injections are processed
-            context.view:parse(parser)
-            local marks = handlers.run(context, parser)
-            callback(iter.list.map(marks, Extmark.new))
+            context.view:parse(parser, function()
+                local marks = handlers.run(context, parser)
+                callback(iter.list.map(marks, Extmark.new))
+            end)
         else
+            log.buf('debug', 'Skip', self.buf, 'in progress')
             callback(nil)
         end
     else

lua/render-markdown/health.lua

@@ -5,7 +5,7 @@ local state = require('render-markdown.state')
 local M = {}
 
 ---@private
-M.version = '8.6.3'
+M.version = '8.6.4'
 
 function M.check()
     M.start('version')

lua/render-markdown/request/view.lua

@@ -57,10 +57,12 @@ function View:overlaps(node)
 end
 
 ---@param parser vim.treesitter.LanguageTree
-function View:parse(parser)
+---@param callback fun()
+function View:parse(parser, callback)
     for _, range in ipairs(self.ranges) do
         parser:parse({ range.top, range.bottom })
     end
+    callback()
 end
 
 ---@param root TSNode