PRTVOL2CSV Fix bug in non-contiguous active FIPNUM

[alifbe]

Fluid-in-place report in Eclipse will skip if there is no active cells within certain FIPNUM. This causes issue in PRTVOL2CSV since res2df will return less rows (FIPNUM) in the data frame.

subscript/src/subscript/prtvol2csv/prtvol2csv.py

Lines 381 to 385 in 71d97be

	volumes = (
	pd.concat([simvolumes_df, resvolumes_df[: len(simvolumes_df)]], axis=1)
	.apply(pd.to_numeric)
	.fillna(value=0.0)
	)

When this inactive FIPNUM is not the last FIPNUM, reservoir volume report will be truncated, causing the last X FIPNUM reservoir volumes set to zero (where X is the number of inactive FIPNUM)

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.16%. Comparing base (e2f1947) to head (93fe56e).
Report is 4 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #770   +/-   ##
=======================================
  Coverage   85.15%   85.16%           
=======================================
  Files          52       52           
  Lines        7418     7421    +3     
=======================================
+ Hits         6317     6320    +3     
  Misses       1101     1101           

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