ext/intl: dateformatter settimezone changes on success, returning true like setcalendar.

Closes GH-10790

Adapt ext/intl tests for ICU 72.1

This version replaces SPACEs before the meridian with NARROW NO-BREAK
SPACEs. Thus, we split the affected test cases as usual.

Fixes GH-9799.

Adapt ext/intl tests for ICU 72.1

This version replaces SPACEs before the meridian with NARROW NO-BREAK
SPACEs. Thus, we split the affected test cases as usual.

Fixes GH-9799.
Closes GH-9800.

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