enhance: improve hashFiles coercion and log grouping (#1394)

- Fix `hashFiles()` argument conversion for numbers, booleans, and null to match GitHub expression semantics.
- Fix rendering of mixed-case, indented, and prefixed legacy group commands while preserving recognized prefixes and escaping.

Reviewed-on: https://gitea.com/gitea/runner/pulls/1394
Reviewed-by: bircni <bircni@icloud.com>
Co-authored-by: silverwind <me@silverwind.io>

act/runner/command.go

@@ -118,7 +118,11 @@ func (rc *RunContext) commandHandler(ctx context.Context) common.LineHandler {
 			rawLogger.Infof("%s", formatAnnotation(command, kvPairs, arg))
 			return false
 		case "group", "endgroup":
-			return true
+			if strings.HasPrefix(line, "::"+command+"::") || strings.HasPrefix(line, "##["+command+"]") {
+				return true
+			}
+			rawLogger.Infof("::%s::%s", command, EscapeCommandData(arg))
+			return false
 		}
 		return echoed
 	}