Several error injection call sites use the verbose handler-lambda API when simpler alternatives already exist in the framework. This series converts them to use the appropriate overloads, reducing boilerplate and making the injection intent immediately obvious from the call site.
Cleaning up in-code debugging facilities, no need to backport
Closesscylladb/scylladb#29962
* github.com:scylladb/scylladb:
error_injection: Convert handler-style breakpoints to wait_for_message sugar
error_injection: Convert no-op handler injections to enter()/is_enabled()
error_injection: Convert handler-throw injections to lambda-throw style
utils: Add share_messages parameter to breakpoint injection API
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