grep with -a (or --text) option does not strip CR from line ends

	Broken in: CYGWIN_NT-6.1     Bu 3.3.4(0.341/5/3) 2022-01-31 19:35 x86_64 Cygwin
	       	   grep (GNU grep) 2.21

	Works  in: CYGWIN_NT-6.1-WOW Bu 2.2.1(0.289/5/3) 2015-08-20 11:40 i686   Cygwin
	       	   grep (GNU grep) 3.7
	       	   Packaged by Cygwin (3.7-2)

To reproduce, do in CMD’s command line:

  D:\> D:\Programs\cygwin2022\bin\perl -we "print qq(abc\r\n)" | D:\Programs\cygwin2022\bin\grep -a "abc$"

This does not emit anything (contrary to the man page, which says:

      If grep decides the file is a text file, it strips the CR
      characters from the original file contents (to make regular
      expressions with ^ and $ work correctly).

(The same happens on Win10.)

Hope this helps,
Ilya