Update ip_2d_feature_extraction: Fix remaining tests (add fp tolerance via regex)

[kostrykin]

Follow-up of #189

https://github.com/BMCV/galaxy-image-analysis/actions/runs/20716938897 Branch push tests failed with

Output output:  different than expected, difference (using diff):
( /tmp/tmpw0inof48input11.tsv v. /tmp/tmp9fcp00q9input11.tsv )
--- local_file
+++ history_data
@@ -1,2 +1,2 @@
 area	mean_intensity	perimeter
-20825.0	129.36364945978391	590.399061660723
+20825.0	129.36364945978391	590.3990616607231

This is fixed here by utilizing compare="re_match" for floating point comparison for all remaining tests.