perf(lualine): more efficient has_git checks (ayamir#838)

This works b/c `finddir()` searches bidirectionally _(downward
searches are recursive and may search through many directories)_.

This commit instructs `fs.find` to only traverse upward through parent
directories and terminate as long as a matche is found.

lua/modules/configs/ui/lualine.lua

@@ -11,6 +11,7 @@ return function()
   local function custom_theme()
     vim.api.nvim_create_autocmd("ColorScheme", {
       group = vim.api.nvim_create_augroup("LualineColorScheme", { clear = true }),
+      pattern = "*",
       callback = function()
         require("lualine").setup({ options = { theme = custom_theme() } })
       end,
@@ -72,9 +73,13 @@ return function()
       return vim.bo.filetype ~= ""
     end,
     has_git = function()
-      local filepath = vim.fn.expand("%:p:h")
-      local gitdir = vim.fn.finddir(".git", filepath .. ";")
-      return gitdir and #gitdir > 0 and #gitdir < #filepath
+      local gitdir = vim.fs.find(".git", {
+        limit = 1,
+        upward = true,
+        type = "directory",
+        path = vim.fn.expand("%:p:h"),
+      })
+      return #gitdir > 0
     end,
   }
 
@@ -267,7 +272,7 @@ return function()
           icon = { align = "left" },
         },
         components.file_status,
-        vim.tbl_deep_extend("force", components.separator, {
+        vim.tbl_extend("force", components.separator, {
           cond = function()
             return conditionals.has_git() and conditionals.has_comp_before()
           end,
@@ -278,6 +283,7 @@ return function()
           "branch",
           icon = icons.git_nosep.Branch,
           color = utils.gen_hl("subtext0", true, true, nil, "bold"),
+          cond = conditionals.has_git,
         },
         {
           "diff",
@@ -289,9 +295,9 @@ return function()
           source = diff_source,
           colored = false,
           color = utils.gen_hl("subtext0", true, true),
+          cond = conditionals.has_git,
           padding = { right = 1 },
         },
-
         { utils.force_centering },
         {
           "diagnostics",