bug#69088: [PATCH] Eagerly indent first field in tables in lua-ts-mode

[john muhl via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>]

Tags: patch

lua-ts-mode supports aligning table fields to the first field so that
you can have code like:

  local t = { a = 1,
              b = 2, }

However if you prefer to put the first field on a newline like:

  local t = {
      a = 1,
      b = 2,
  }

the indentation doesn’t happen until you press RET after the first
comma. So you initially have something like (where | is point):

  local t = {
  |
  }

This patch fixes that so the initial indentation is correct from the beginning:

  local t = {
      |
  }