NIFI-13726 Set cell style copy policy to false in order to avoid exceeding the maximum number of cell styles (64000) in an Excel Workbook

[dan-s1]

Summary

NIFI-13726

This can be tested using the attached file which is the file that caused the original issue in NIFI-13466 . As is that file had another issue described in NIFI-13819 which did not allow it to be read. The file attached is that file modified to allow it to be read without any issue.
2024-6-7-iolp-buildings.xlsx

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[mattyb149]

+1 LGTM, thanks for the fix! Merging to main