make sure special logs be sent to gitea's server (#25)

example:
https://gitea.com/a1012112796/test_action/actions/runs/7

![image](/attachments/a8931f2f-096f-41fd-8f9f-0c8322ee985a)

TODO: special handle them on ui

Signed-off-by: a1012112796 <1012112796@qq.com>

Reviewed-on: https://gitea.com/gitea/act/pulls/25
Reviewed-by: Jason Song <i@wolfogre.com>
Reviewed-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: a1012112796 <1012112796@qq.com>
Co-committed-by: a1012112796 <1012112796@qq.com>

act/runner/command.go

@@ -77,7 +77,8 @@ func (rc *RunContext) commandHandler(ctx context.Context) common.LineHandler {
 			logger.Infof("  \U00002753  %s", line)
 		}
 
-		return false
+		// return true to let gitea's logger handle these special outputs also
+		return true
 	}
 }