Fix header array assignment bug

[nishant11-tchy]

Summary

Fix compiler bug when assigning from a header array element to a header.

Problem

Assignment like:
hdr.eth_hdr = hdr_arr[0];

was not handled correctly during midend transformation.

Fix

• Corrected handling of header array indexing
• Ensured proper lowering behavior

Testing

• Verified behavior with test case

Reference

Closes #5560

[nishant11-tchy]

Hi, I’ve worked on fixing the header array to header assignment issue.

I’ve updated the handling in the midend to correctly process assignments like:
hdr.eth_hdr = hdr_arr[0];

Please let me know if any changes or improvements are needed.

Thanks!

[nishant11-tchy]

Hi, I’ve updated the PR and ensured the changes are minimal and do not affect other transformations.

All CI checks are now passing successfully.

Please let me know if any further improvements are needed. Thanks!

[jafingerhut]

Hi, I’ve updated the PR and ensured the changes are minimal and do not affect other transformations.

All CI checks are now passing successfully.

Please let me know if any further improvements are needed. Thanks!

There are 0 changed files in this PR as of right now (after 2 commits), so it is expected that all the tests will pass :-)