bug#60572: 29.0.60; c-ts-mode: String spanning multiple lines are not indented

[Mohammed Sadiq <sadiq@sadiqpk.org>]

The following code doesn't indent with TAB on c-ts-mode:

#include <stdio.h>

int
main (void)
{
   char *test = "some "
   "test";

   puts ("more "
   "test");
}


expected indentation:

#include <stdio.h>

int
main (void)
{
   char *test = "some "
     "test";

   puts ("more "
	"test");
}



In GNU Emacs 29.0.60 (build 5, x86_64-pc-linux-gnu, GTK+ Version
  3.24.35, cairo version 1.16.0) of 2023-01-02 built on purism
Repository revision: 2569ede9c496bb060e0b88428cb541088aaba1f9
Repository branch: emacs-29
Windowing system distributor 'The X.Org Foundation', version 
11.0.12101005
System Description: Debian GNU/Linux bookworm/sid