fix(edgy): add nil check for toggleterm terminal (#1546)

Fixes #1545

When toggleterm terminal has not been created yet, `require("toggleterm.terminal").get(1)` returns nil, causing an error when trying to access `term.direction`.

This commit adds a nil check before accessing the direction property to prevent the error.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-authored-by: Claude Sonnet 4.5 <[email protected]>

Author: zonghaoyuan

lua/modules/configs/ui/edgy.lua

@@ -59,7 +59,7 @@ return function()
 				filter = function(_, win)
 					local cfg = vim.api.nvim_win_get_config(win)
 					local term = require("toggleterm.terminal").get(1)
-					return cfg.relative == "" and term.direction == "horizontal"
+					return cfg.relative == "" and term and term.direction == "horizontal"
 				end,
 			},
 			{