Add ignore delete parameter #405
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What type of PR is this：
Which issues of this PR fixes ：
Fixes #392
Problem Summary(Required) ：
This PR introduces a new parameter to control whether to ignore delete records. By default, this parameter is set to
false, meaning delete records will be processed normally. However, when users choose to set it totrue, the system will ignore the delete records. This feature is particularly useful in scenarios where users want to retain full data when syncing with Flink CDC, without altering the source Flink CDC message sending configuration.Checklist: