fix(status): improve lsp_client_names mappings configuration

Author: mehalter

lua/astroui/status/config.lua

@@ -108,7 +108,7 @@
 
 ---@class AstroUIProviderLspClientNamesOpts: AstroUIStatusStylizeOpts
 ---@field integrations { null_ls: boolean?, conform: boolean?, nvim-lint: boolean? }? enable or disable client name integrations
----@field mappings { [string]: (string|fun(client: string): string)? }? add custom client name mappings ("*" will apply to all as a fallback)
+---@field mappings { [string]: false|string|fun(client: string): (false|string|nil) }? add custom client name mappings ("*" will apply to all as a fallback)
 ---@field truncate number? percentage of statusline of the maximum width before truncation with ellipsis
 
 ---@class AstroUIProviderVirtualEnvOpts: AstroUIStatusStylizeOpts

lua/astroui/status/provider.lua

@@ -545,9 +545,14 @@ function M.lsp_client_names(opts)
     local buf_client_names_set, client_name_lookup = {}, {}
     for _, client in ipairs(buf_client_names) do
       local mapping = opts.mappings and (opts.mappings[client] or opts.mappings["*"])
-      if mapping then client = type(mapping) == "string" and mapping or mapping(client) end
-      if opts.mappings and opts.mappings[client] then client = opts.mappings[client] end
-      if not client_name_lookup[client] then
+      if mapping then
+        if type(mapping) == "function" then
+          client = mapping(client)
+        else
+          client = mapping
+        end
+      end
+      if client and client ~= "" and not client_name_lookup[client] then
         client_name_lookup[client] = true
         table.insert(buf_client_names_set, client)
       end