Fix Indian time zone test when run by Irishmen (bug#45818)

* test/lisp/calendar/solar-tests.el (solar-sunrise-sunset):
Inhibit any attempt by confused calendar code to apply daylight saving
correction when Irish time zone settings are in effect.  It's not
entirely clear why this is needed but may be related to the fact that
'IST' stands for both Irish and Indian Standard Time, and that Ireland
uses reversed daylight saving in winter.
1 job for master in 159 minutes and 56 seconds (queued for 4 seconds)
Status Job ID Name Coverage
  Test
failed #10037
test-all

02:39:56

 
Name Stage Failure
failed
test-all Test
1 files contained unexpected results:
lisp/shadowfile-tests.log
make[2]: *** [check-doit] Error 1
make[1]: *** [check-expensive] Error 2
make: *** [check-expensive] Error 2
Makefile:293: recipe for target 'check-expensive' failed
make[1]: Leaving directory '/builds/emacs/emacs/test'
Makefile:966: recipe for target 'check-expensive' failed
ERROR: Job failed: exit code 1