ICU-22522 Remove -Wno-ambiguous-reversed-operator

[roubert]

Checklist

• Required: Issue filed: https://unicode-org.atlassian.net/browse/ICU-22522
• Required: The PR title must be prefixed with a JIRA Issue number.
• Required: The PR description must include the link to the Jira Issue, for example by completing the URL in the first checklist item
• Required: Each commit message must be prefixed with a JIRA Issue number.
• Issue accepted (done by Technical Committee after discussion)
• Tests included, if applicable
• API docs and/or User Guide docs changed or added, if applicable

ALLOW_MANY_COMMITS=true

[jira-pull-request-webhook]

Notice: the branch changed across the force-push!

• icu4c/source/test/intltest/pluralmaptest.cpp is now changed in the branch

View Diff Across Force-Push

~ Your Friendly Jira-GitHub PR Checker Bot

[markusicu]

lgtm tnx

[markusicu]

... except we normally squash commits. You could just hoist the commit messages into the pull request and then squash, and merge.

[roubert]

... except we normally squash commits.

… when those commits are incremental changes.