nvim: Disable flash.nvim in search mode

Hopefully definitively disabled the search mode for the flash.nvim
plugin. Previously only disabled the key mapping but it would still run
every now and again.

nvim/.config/nvim/lua/plugins/core.lua

@@ -47,7 +47,13 @@ return {
 	{
 		"folke/flash.nvim",
 		event = "VeryLazy",
-		opts = {},
+		opts = {
+			modes = {
+				search = {
+					enabled = false,
+				},
+			},
+		},
 		keys = {
 			{
 				"s",