fix: paragraph width calculation

fixes #20

Author: b0o

lua/nui-components/component/init.lua

@@ -395,8 +395,8 @@ function Component:initial_value()
 end
 
 function Component:modify_buffer_content(modify_fn)
-  self:set_buffer_option("modifiable", true)
   vim.schedule(function()
+    self:set_buffer_option("modifiable", true)
     modify_fn()
     vim.schedule(function()
       self:set_buffer_option("modifiable", false)

lua/nui-components/paragraph.lua

@@ -145,12 +145,13 @@ function Paragraph:on_update()
     local lines = self:get_lines()
     local size = self:get_size()
     local props = self:get_props()
+    local border_delta_size = self:get_border_delta_size()
 
     if not self:is_hidden() then
       self._private.last_width = size.width
     end
 
-    local width = self._private.last_width or size.width
+    local width = (self._private.last_width or size.width) - border_delta_size.width
 
     fn.ieach(lines, function(line, index)
       local new_line = Line()