fix: set aquisition ID to before setting file prefix

[shihab-dls]

Upon testing on i15, we found that setting acquisition_id results in no meta data being written. This is because this fanout signal does not put to EF.acqid, so images received from the fan are not set to the right ID. Further testing showed that setting EF.acqid to filename (alongside IDs on FPs and MW) results in FP errors, where:

FP.FrameProcessorPlugin ERROR - Received image message with series_number 2067 - expecting 2065 - ignoring

Thus, acquisition ID must be set to a specific series number on all plugins. Acquisition ID is not used on i15 and i19, and I believe it is not used anywhere else. Therefore, we can simply set acquisition ID to "", which uses default writers on all plugins, such that anything popped off of EF is processed. This needs to be done before setting file_name and file_prefix as MW will set acquisition_ID to None, which must be unset before putting to MW.file_name or MW.file_prefix, and acquisition_ID being a fanout into file_prefix attributes means it needs to be set first to not override.

[checkmarx-gh-ast-us-povs]

Checkmarx One – Scan Summary & Details – b6e4aaf6-9dde-443b-853c-87a4acf09ad4

Great job! No new security vulnerabilities introduced in this pull request

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[coretl]

Merge when you're ready