fix(lsp/health): always use vim.inspect to show root_markers (#34667)

In https://github.com/neovim/neovim/pull/34092 we changed the
healthcheck to display root markers as a concatenated list if the first
item in root_markers is a string (not a table). However, this does not
solve the general case, because root_markers can contain a string as the
first element, but a table as the 2nd element.

Because root_markers has a more complex structure we should always just
display it using vim.inspect, rather than adding a special case for when
all items are a string.

runtime/lua/vim/lsp/health.lua

@@ -198,7 +198,7 @@ local function check_enabled_configs()
         local v_str --- @type string?
         if k == 'name' then
           v_str = nil
-        elseif k == 'filetypes' or (k == 'root_markers' and type(v[1]) == 'string') then
+        elseif k == 'filetypes' then
           v_str = table.concat(v, ', ')
         elseif type(v) == 'function' then
           v_str = func_tostring(v)