fix(explorer.watch): pcall watcher, since it can give errors on windows

lua/snacks/explorer/watch.lua

@@ -21,7 +21,7 @@ local running = {} ---@type table<string, fun()>
 
 function M.abort()
   for _, abort in pairs(running) do
-    abort()
+    pcall(abort)
   end
   running = {}
 end
@@ -38,6 +38,7 @@ function M.watch(cwd)
   end
   M.abort()
 
+  pcall(function()
     local timer = assert(uv.new_timer())
     local cancel = watch(cwd, {
       uvflags = { recursive = true },
@@ -69,6 +70,7 @@ function M.watch(cwd)
       end
       cancel()
     end
+  end)
 end
 
 return M