[rb] Update `unhandled_prompt_behavior` capability to support hash syntax. #16605

Job	Run time
Check	7m 26s
.NET	0s
Python	-1s
Rust	-1s
Java	-1s
Ruby / Build / Build	4m 6s
Ruby / Documentation / Documentation	7m 14s
Ruby / Unit Tests (3.2.8, ubuntu) / Unit Tests (3.2.8, ubuntu)	5m 47s
Ruby / Unit Tests (3.2.8, macos) / Unit Tests (3.2.8, macos)	3m 8s
Ruby / Unit Tests (3.2.8, windows) / Unit Tests (3.2.8, windows)	21m 0s
Ruby / Unit Tests (3.4.3, ubuntu) / Unit Tests (3.4.3, ubuntu)	3m 57s
Ruby / Unit Tests (jruby-10.0.0.0, ubuntu) / Unit Tests (jruby-10.0.0.0, ubuntu)	7m 29s
Ruby / Unit Tests (truffleruby-24.2.1, ubuntu) / Unit Tests (truffleruby-24.2.1, ubuntu)	10m 24s
Ruby / Local Tests (firefox, macos) / Local Tests (firefox, macos)	24m 20s
Ruby / Local Tests (firefox, windows) / Local Tests (firefox, windows)	18m 15s
Ruby / Local Tests (chrome, windows) / Local Tests (chrome, windows)	19m 33s
Ruby / Local Tests (chrome, macos) / Local Tests (chrome, macos)	19m 15s
Ruby / Local Tests (edge, windows) / Local Tests (edge, windows)	19m 22s
Ruby / Remote Tests (edge, windows) / Remote Tests (edge, windows)	20m 4s
	3h 11m 17s

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