Scala 3.2 regex deconstruction warnings

[ekrich]

Code in Instant and LocalDate:

val pattern = """(^[-+]?)(\d*)-(\d*)-(\d*)""".r
val pattern(sign, yearSegment, monthSegment, daySegment) = text

From compiling:

[warn] -- Warning: /Users/eric/workspace/sjavatime/sjavatime/shared/src/main/scala/java/time/Instant.scala:391:17 
[warn] 391 |      val pattern(sign, yearSegment, monthSegment, daySegment,
[warn]     |          ^
[warn]     |pattern binding uses refutable extractor `pattern`
[warn]     |
[warn]     |If this usage is intentional, this can be communicated by adding `: @unchecked` after the expression,
[warn]     |which may result in a MatchError at runtime.
[warn]     |This patch can be rewritten automatically under -rewrite -source 3.2-migration.
[warn] 392 |          hourSegment, minutesSegment, secondsSegment, nanosecondsSegment) = text
[warn] -- Warning: /Users/eric/workspace/sjavatime/sjavatime/shared/src/main/scala/java/time/Instant.scala:391:17 
[warn] 391 |      val pattern(sign, yearSegment, monthSegment, daySegment,
[warn]     |          ^
[warn]     |pattern binding uses refutable extractor `pattern`
[warn]     |
[warn]     |If this usage is intentional, this can be communicated by adding `: @unchecked` after the expression,
[warn]     |which may result in a MatchError at runtime.
[warn]     |This patch can be rewritten automatically under -rewrite -source 3.2-migration.
[warn] 392 |          hourSegment, minutesSegment, secondsSegment, nanosecondsSegment) = text
[warn] -- Warning: /Users/eric/workspace/sjavatime/sjavatime/shared/src/main/scala/java/time/LocalDate.scala:446:17 
[warn] 446 |      val pattern(sign, yearSegment, monthSegment, daySegment) = text
[warn]     |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[warn]     |pattern binding uses refutable extractor `pattern`
[warn]     |
[warn]     |If this usage is intentional, this can be communicated by adding `: @unchecked` after the expression,
[warn]     |which may result in a MatchError at runtime.
[warn]     |This patch can be rewritten automatically under -rewrite -source 3.2-migration.
[warn] -- Warning: /Users/eric/workspace/sjavatime/sjavatime/shared/src/main/scala/java/time/LocalDate.scala:446:17 
[warn] 446 |      val pattern(sign, yearSegment, monthSegment, daySegment) = text
[warn]     |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[warn]     |pattern binding uses refutable extractor `pattern`
[warn]     |
[warn]     |If this usage is intentional, this can be communicated by adding `: @unchecked` after the expression,
[warn]     |which may result in a MatchError at runtime.
[warn]     |This patch can be rewritten automatically under -rewrite -source 3.2-migration.
[warn] two warnings found