[16.0][FIX] rma: fix action that opens related RMA or RTV.

[DavidJForgeFlow]

Forward port of #545

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 4 lines in your changes missing coverage. Please review.

Project coverage is 80.80%. Comparing base (53bb77a) to head (63aaa44).
Report is 6 commits behind head on 16.0.

Files with missing lines	Patch %	Lines
rma/models/rma_order_line.py	0.00%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             16.0     #547      +/-   ##
==========================================
+ Coverage   80.71%   80.80%   +0.08%     
==========================================
  Files         151      159       +8     
  Lines        5295     5387      +92     
  Branches      856      867      +11     
==========================================
+ Hits         4274     4353      +79     
- Misses        783      793      +10     
- Partials      238      241       +3     

Flag	Coverage Δ
	80.80% <0.00%> (?)

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Files with missing lines	Coverage Δ
rma/models/rma_order_line.py	78.94% <0.00%> (ø)

... and 1 file with indirect coverage changes

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